On May 2, 2013, a case of salmonellosis was reported to the Maine Center for Disease Control and Prevention. The patient reported symptoms of diarrhea, fever, abdominal pain, and nausea, after attending a community college microbiology laboratory class. A second case was reported on May 8. Epidemiologic interviews conducted with both patients indicated common exposure at a community college, including one patient specifically naming the other patient.
On May 15, the Health and Environmental Testing Laboratory (HETL) determined that the clinical Salmonella isolates from stool specimens provided by outside hospital laboratories from both patients were indistinguishable by pulsed field gel electrophoresis (PFGE) analysis from a specimen used by the students during the microbiology class. The clinical isolates and laboratory class isolate all had a PFGE pattern indistinguishable from that of bacteria isolated during a national Salmonella Typhimurium outbreak in 2010 that was associated with clinical and teaching microbiology laboratories (1). No cases were reported from Maine during the 2010 outbreak.
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jueves, 7 de noviembre de 2013
lunes, 4 de noviembre de 2013
¡Los hospitales no se incendian!
¡Los hospitales no se incendian! Guía hospitalaria para la prevención de incendios y evacuación
Esta guía ha sido creada para poner de relieve la vulnerabilidad de los hospitales a los incendios. Es necesario que se adopten todas las medidas posibles para minimizar el riesgo de incendios en hospitales y asegurar la evacuación. El documento se puede aplicar en hospitales que han sido reforzados para mejorar la seguridad en cuanto a incendios, así como en nuevas instalaciones en proyecto.
El documento está dividido en cuatro secciones principales a considerarse en caso de incendio en hospitales, a saber, prevención, supresión, evacuación y simulacros de capacitación.
REFERENCIA:
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lunes, 21 de octubre de 2013
Antimicrobial Resistance in the Food Chain: A Review
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| Overview of horizontal gene transfer in food products (For complete image click HERE). |
REFERENCIA:
Verraes C. Antimicrobial Resistance in the Food Chain: A Review. Int J Environ Res Public Health. 2013 July; 10(7): 2643–2669.
viernes, 18 de octubre de 2013
Influence of temperature and organic load on chemical disinfection
ABSTRACT:
This study evaluated the influence of temperature and organic load on the effectiveness of domestic bleach (DB), Surface Decontamination Foam (SDF), and Virkon in inactivating Geobacillus stearothermophilus spores, which are a surrogate for Bacillus anthracis spores. The spores were suspended in light or heavy organic preparations and the suspension was applied to stainless steel carrier disks. The dried spore inoculum was covered with the disinfectants and the disks were then incubated at various temperatures. At −20°C, the 3 disinfectants caused less than a 2.0 log10 reduction of spores in both organic preparations during a 24-h test period. At 4°C, the DB caused a 4.4 log10 reduction of spores in light organic preparations within 2 h, which was about 3 log10 higher than what was achieved with SDF or Virkon. In heavy organic preparations, after 24 h at 4°C the SDF had reduced the spore count by 4.5 log10, which was about 2 log10 higher than for DB or Virkon. In general, the disinfectants were most effective at 23°C but a 24-h contact time was required for SDF and Virkon to reduce spore counts in both organic preparations by at least 5.5 log10. Comparable disinfecting activity with DB only occurred with the light organic load. In summary, at temperatures as low as 4°C, DB was the most effective disinfectant, inactivating spores within 2 h on surfaces with a light organic load, whereas SDF produced the greatest reduction of spores within 24 h on surfaces with a heavy organic load.
REFERENCE:
Jiewen Guan, Maria Chan, Brian W. Brooks, and Liz Rohonczy. Influence of temperature and organic load on chemical disinfection of Geobacillus steareothermophilus spores, a surrogate for Bacillus anthracis. Can J Vet Res. 2013 April; 77(2): 100–104.
This study evaluated the influence of temperature and organic load on the effectiveness of domestic bleach (DB), Surface Decontamination Foam (SDF), and Virkon in inactivating Geobacillus stearothermophilus spores, which are a surrogate for Bacillus anthracis spores. The spores were suspended in light or heavy organic preparations and the suspension was applied to stainless steel carrier disks. The dried spore inoculum was covered with the disinfectants and the disks were then incubated at various temperatures. At −20°C, the 3 disinfectants caused less than a 2.0 log10 reduction of spores in both organic preparations during a 24-h test period. At 4°C, the DB caused a 4.4 log10 reduction of spores in light organic preparations within 2 h, which was about 3 log10 higher than what was achieved with SDF or Virkon. In heavy organic preparations, after 24 h at 4°C the SDF had reduced the spore count by 4.5 log10, which was about 2 log10 higher than for DB or Virkon. In general, the disinfectants were most effective at 23°C but a 24-h contact time was required for SDF and Virkon to reduce spore counts in both organic preparations by at least 5.5 log10. Comparable disinfecting activity with DB only occurred with the light organic load. In summary, at temperatures as low as 4°C, DB was the most effective disinfectant, inactivating spores within 2 h on surfaces with a light organic load, whereas SDF produced the greatest reduction of spores within 24 h on surfaces with a heavy organic load.
REFERENCE:
Jiewen Guan, Maria Chan, Brian W. Brooks, and Liz Rohonczy. Influence of temperature and organic load on chemical disinfection of Geobacillus steareothermophilus spores, a surrogate for Bacillus anthracis. Can J Vet Res. 2013 April; 77(2): 100–104.
jueves, 17 de octubre de 2013
Histoplasmosis: Protecting Workers at Risk
This booklet is a revised edition of the NIOSH document Histoplasmosis: Protecting Workers at Risk, which was originally published in September 1997. The updated information in this booklet will help readers under stand what histoplasmosis is and recognize activities that may expose workers to the disease-causing fungus Histoplasma capsulatum. The booklet also informs readers about methods they can use to protect themselves and others from exposure.
Outbreaks of histoplasmosis have shared similar circumstances: People who did not know the health risks of breathing in the spores of H. capsulatum became ill and sometimes caused others nearby to become ill when they disturbed contaminated soil or accumulations of bird or bat manure. Because they were unaware of the hazard, they did not take protective measures that could have prevented illness.
This booklet will help prevent such exposures by serving as a guide for safety and health professionals, environmental consultants, supervisors, and others responsible for the safety and health of those working near material contaminated with H. capsulatum. Activities that pose a health risk to workers at these sites include disturbance of soil at an active or inactive bird roost or poultry house, excavation in regions where this fungus is endemic, and removal of bat or bird manure from buildings.
REFERENCE:
Histoplasmosis: Protecting Workers at Risk. NIOSH/CDC 2003
Outbreaks of histoplasmosis have shared similar circumstances: People who did not know the health risks of breathing in the spores of H. capsulatum became ill and sometimes caused others nearby to become ill when they disturbed contaminated soil or accumulations of bird or bat manure. Because they were unaware of the hazard, they did not take protective measures that could have prevented illness.
This booklet will help prevent such exposures by serving as a guide for safety and health professionals, environmental consultants, supervisors, and others responsible for the safety and health of those working near material contaminated with H. capsulatum. Activities that pose a health risk to workers at these sites include disturbance of soil at an active or inactive bird roost or poultry house, excavation in regions where this fungus is endemic, and removal of bat or bird manure from buildings.
REFERENCE:
Histoplasmosis: Protecting Workers at Risk. NIOSH/CDC 2003
miércoles, 16 de octubre de 2013
Technologies to Enable Autonomous Detection for BioWatch
Technologies to Enable Autonomous Detection for BioWatch is the summary of a workshop hosted jointly by the Institute of Medicine and the National Research Council in June 2013 to explore alternative cost-effective systems that would meet the requirements for a BioWatch Generation 3.0 autonomous detection system, or autonomous detector, for aerosolized agents . The workshop discussions and presentations focused on examination of the use of four classes of technologies--nucleic acid signatures, protein signatures, genomic sequencing, and mass spectrometry--that could reach Technology Readiness Level (TRL) 6-plus in which the technology has been validated and is ready to be tested in a relevant environment over three different tiers of temporal timeframes: those technologies that could be TRL 6-plus ready as part of an integrated system by 2016, those that are likely to be ready in the period 2016 to 2020, and those are not likely to be ready until after 2020. Technologies to Enable Autonomous Detection for BioWatch discusses the history of the BioWatch program, the role of public health officials and laboratorians in the interpretation of BioWatch data and the information that is needed from a system for effective decision making, and the current state of the art of four families of technology for the BioWatch program. This report explores how the technologies discussed might be strategically combined or deployed to optimize their contributions to an effective environmental detection capability.
Paperback
300 pages | 6 x 9
ISBN 978-0-309-29251-1
lunes, 14 de octubre de 2013
Oct 15, Día Mundial del Lavado de Manos #IWashMyHands
Un gesto tan simple como lavarse las manos con agua y jabón puede ser clave para la supervivencia de millones de personas, sobre todo de los más pequeños. Los niños y niñas son especialmente vulnerables a los efectos de la diarrea y de las infecciones respiratorias, enfermedades que se pueden prevenir fácilmente y de forma barata con un poco de agua y jabón. Este día quiere servir como recordatorio de la importancia de esta práctica
El Día Mundial del Lavado de Manos es un llamamiento para concientizar a la población de que un poco de agua y jabón pueden salvar muchas vidas. Este día se celebra por primera vez este 15 de octubre en 70 países de los cinco contienentes. Es la primera vez en la historia en la que una campaña mundial pide a millones de personas que laven sus manos con agua y jabón
Referencias:
Global Hand Washing
UNICEF
Referencias:
Global Hand Washing
UNICEF
viernes, 11 de octubre de 2013
Fire Exposures of Fire Fighter Self-Contained Breathing Apparatus Facepiece Lenses
National Institute of Standards and Technology (NIST), conducted experiments which demonstrated a range of realistic thermal exposures and environmental conditions that firefighters could be exposed to. Self-contained breathing apparatus (SCBA) facepieces were exposed to thermal environments from propane-fueled calibration experiments and furnished townhouse fire experiments. The rooms and the facepieces were instrumented to measure temperatures of the environment and the facepieces. The fire experiments lasted 5 minutes to 10 minutes and produced ceiling temperatures of approximately 500 °C (932 °F) to 750 °C (1382 °F) in the room adjacent to the fire. A heat flux gauge was also installed next to the facepieces and measured peak heat fluxes from approximately 2 kW/m2 to 55 kW/m2. Eight facepieces were tested in six different experiments, with three facepiece lenses showing evidence of thermal degradation from the exposure. Maximum exterior lens temperatures were as high as 300 °C (572 °F) in these cases. The environments that caused the failures were identified in an attempt to characterize the thermal performance of SCBA facepieces. Although much was learned about conditions associated with thermal degradation of SCBA facepiece lenses, more experiments are needed to be able to understand the thermal degradation and more definitively predict the conditions that are likely to cause a facepiece lens failure.
REFERENCE
Fire Exposures of Fire Fighter Self-Contained Breathing Apparatus Facepiece Lenses
National Institute of Standards and Technology Technical Note 1724
Natl. Inst. Stand. Technol. Tech. Note 1724, 45 pages (November 2011)
CODEN: NSPUE2
REFERENCE
Fire Exposures of Fire Fighter Self-Contained Breathing Apparatus Facepiece Lenses
National Institute of Standards and Technology Technical Note 1724
Natl. Inst. Stand. Technol. Tech. Note 1724, 45 pages (November 2011)
CODEN: NSPUE2
jueves, 10 de octubre de 2013
The Handwashing Handbook
This handbook grows out of the experience of the Global Public-Private Partnership for Handwashing with Soap
(PPPHW) and its predecessor, the Central American Handwashing for Diarrheal Disease Prevention Program. These
efforts demonstrated that mass programs with public and private sector involvement can be successful in promoting
handwashing and reducing disease. With core support from the Bank Netherlands Water Partnership, the PPPHW has
brought together global public and private agencies to consolidate approaches while initiating large-scale handwashing
promotion in Ghana, Peru, Senegal, and Nepal.
While much has been learned about handwashing promotion in recent years, especially in the areas of research and
program design, countries are still experimenting with, and optimizing approaches to implementation. It is important to
lay out what is known so that others can begin designing programs and contributing to a global body of knowledge and
experience in the fight against child mortality.
This handbook is intended for staff in government and development organizations charged with carrying out handwashing
programs. Decision-makers in Ministries and funding agencies will also find assistance in designing policies and programs
to improve public health.
TheHandwashingHandbook:A guide for developing a hygiene promotion programto increase handwashing with soap
TheHandwashingHandbook:A guide for developing a hygiene promotion programto increase handwashing with soap
miércoles, 9 de octubre de 2013
Volcanoes: Protecting the Public´s Health
This instructional guide is meant for use before, during and after the viewing of the video "Volcanoes: Protecting the Public’s Health." It uses a simple format to present the most important aspects of the video, providing technical information for health personnel who may be involved in prevention, preparedness, or response activities in volcanic emergencies. The information in the video and guide are based on experiences in the Americas, addressing the major health risks associated with volcanic eruptions and basic planning measures that the health sector should undertake to reduce potential losses. The video is divided into two distinct but complementary sections that can be used together or separately.
REFERENCIA:
Volcanoes: Protecting the Public’s Health
REFERENCIA:
Volcanoes: Protecting the Public’s Health
lunes, 7 de octubre de 2013
Advancing infection control in dental care settings
ABSTRACT
Background and Overview. The authors set out to identify factors associated with implementation by U.S. dentists of four practices first recommended in the Centers for Disease Control and Prevention’s Guidelines for Infection Control in Dental Health-Care Settings—2003.
Methods. In 2008, the authors surveyed a stratified random sample of 6,825 U.S. dentists. The response rate was 49 percent. The authors gathered data regarding dentists’ demographic and practice characteristics, attitudes toward infection control, sources of instruction regarding the guidelines and knowledge about the need to use sterile water for surgical procedures. Then they assessed the impact of those factors on the implementation of four recommendations: having an infection control coordinator, maintaining dental unit water quality, documenting percutaneous injuries and using safer medical devices, such as safer syringes and scalpels. The authors conducted bivariate analyses and proportional odds modeling.
Results. Responding dentists in 34 percent of practices had implemented none or one of the four recommendations, 40 percent had implemented two of the recommendations and 26 percent had implemented three or four of the recommendations. The likelihood of implementation was higher among dentists who acknowledged the importance of infection control, had practiced dentistry for less than 30 years, had received more continuing dental education credits in infection control, correctly identified more surgical procedures that require the use of sterile water, worked in larger practices and had at least three sources of instruction regarding the guidelines. Dentists with practices in the South Atlantic, Middle Atlantic or East South Central U.S. Census divisions were less likely to have complied.
Conclusions. Implementation of the four recommendations varied among U.S. dentists. Strategies targeted at raising awareness of the importance of infection control, increasing continuing education requirements and developing multiple modes of instruction may increase implementation of current and future Centers for Disease Control and Prevention guidelines.
REFERENCE:
Jennifer L. Cleveland, et al. Advancing infection control in dental care settings. JADA 2012;143(10):1127-1138.
Background and Overview. The authors set out to identify factors associated with implementation by U.S. dentists of four practices first recommended in the Centers for Disease Control and Prevention’s Guidelines for Infection Control in Dental Health-Care Settings—2003.
Methods. In 2008, the authors surveyed a stratified random sample of 6,825 U.S. dentists. The response rate was 49 percent. The authors gathered data regarding dentists’ demographic and practice characteristics, attitudes toward infection control, sources of instruction regarding the guidelines and knowledge about the need to use sterile water for surgical procedures. Then they assessed the impact of those factors on the implementation of four recommendations: having an infection control coordinator, maintaining dental unit water quality, documenting percutaneous injuries and using safer medical devices, such as safer syringes and scalpels. The authors conducted bivariate analyses and proportional odds modeling.
Results. Responding dentists in 34 percent of practices had implemented none or one of the four recommendations, 40 percent had implemented two of the recommendations and 26 percent had implemented three or four of the recommendations. The likelihood of implementation was higher among dentists who acknowledged the importance of infection control, had practiced dentistry for less than 30 years, had received more continuing dental education credits in infection control, correctly identified more surgical procedures that require the use of sterile water, worked in larger practices and had at least three sources of instruction regarding the guidelines. Dentists with practices in the South Atlantic, Middle Atlantic or East South Central U.S. Census divisions were less likely to have complied.
Conclusions. Implementation of the four recommendations varied among U.S. dentists. Strategies targeted at raising awareness of the importance of infection control, increasing continuing education requirements and developing multiple modes of instruction may increase implementation of current and future Centers for Disease Control and Prevention guidelines.
REFERENCE:
Jennifer L. Cleveland, et al. Advancing infection control in dental care settings. JADA 2012;143(10):1127-1138.
viernes, 4 de octubre de 2013
StarTalkRadio: Zombie Apocalypse (Part 2)
PART 2: The Zombie Apocalypse rages on as Neil deGrasse Tyson hunts for the truth with World War Z author Max Brooks and Pulitzer Prize winning journalist and virus expert Laurie Garrett.
45 mins.
45 mins.
miércoles, 2 de octubre de 2013
How to choose a suit for a BSL4 laboratory
Elegir el traje apropiado para un laboratorio BSL4 es de vital importancia para crear un ambiente de trabajo seguir dentro de las instalaciones. El traje debe de proveer protección para quien lo usa y ser compatible con la infraestructura en las instalaciones, además de proporcionar cierto grado de confort. En este artículos los autores desarrollaron un programa de pruebas para comparar los diferentes modelos de traje y garantizar que los trajes elegidos puedan ser utilizados bajo condiciones específicas.
REFERENCIA:
Kümin D, Krebs C & Wick P. How to choose a suit for a BSL4 laboratory- The approach taken at Spiez Laboratory. Applied Biosafety 2011. Vol. 16, No. 2, p94-102
REFERENCIA:
Kümin D, Krebs C & Wick P. How to choose a suit for a BSL4 laboratory- The approach taken at Spiez Laboratory. Applied Biosafety 2011. Vol. 16, No. 2, p94-102
lunes, 30 de septiembre de 2013
Intervención de laboratorios y bancos de sangre en situaciones de desastre
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| ISBN 92 75 32380 1 OPS/HSP/HSE/08-2001 |
• La confirmación diagnóstica de las enfermedades transmisibles de alta mortalidad.
• La disponibilidad de exámenes básicos para el manejo de heridos.
• La provisión oportuna de sangre segura.
La presente guía pretende sensibilizar y orientar a las autoridades de salud, directores y técnicos de laboratorios y bancos de sangre en la identificación de responsabilidades y funciones de estos servicios ante situaciones de desastres, basándose en prioridades, necesidades y capacidad de respuesta inmediata local. La incorporación de actividades de mitigación y reducción de vulnerabilidad, rehabilitación y reorganización de los servicios en los planes de contingencia permitirá una mejor respuesta de los servicios de salud posterior a los desastres.
REFERENCIA:
Intervención de laboratorios y bancos de sangre en situaciones de desastre
viernes, 27 de septiembre de 2013
StarTalkRadio: Zombie Apocalypse (Part 1)
PART 1: There’s no escaping the Zombie Apocalypse when Neil deGrasse Tyson interviews Max Brooks, author of World War Z and the world’s leading “authority” on these nonexistent killers.
45 mins.
45 mins.
miércoles, 25 de septiembre de 2013
Evaluation of the Operator Protection Factors Offered by Positive Pressure Air Suit
Laboratories throughout the world that perform work with Risk Group 4 Pathogens generally adopt one of two approaches within BSL-4 environments: either the use of positive pressure air-fed suits or using Class III microbiological safety cabinets and isolators for animal work. Within the UK at present, all laboratories working with Risk Group 4 agents adopt the use of Class III microbiological safety cabinet lines and isolators. Operator protection factors for the use of microbiological safety cabinets and isolators are available however; there is limited published data on the operator protection factors afforded by the use of positive pressure suits. This study evaluated the operator protection factors provided by positive pressure air suits against a realistic airborne microbiological challenge. The suits were tested, both intact and with their integrity compromised, on an animated mannequin within a stainless steel exposure chamber. The suits gave operator protection in all tests with an intact suit and with a cut in the leg. When compromised by a cut in the glove, a very small ingress of the challenge was seen as far as the wrist. This is likely to be due to the low airflow in the gloves of the suit. In all cases no microbiological penetration of the respiratory tract was observed. These data provide evidence on which to base safety protocols for use of positive pressure suits within high containment laboratorios.
REFERENCE
REFERENCE
Jackie A. Steward * and Mark S. Lever. Evaluation of the Operator Protection Factors Offered by Positive Pressure Air Suits against Airborne Microbiological Challenge.
Viruses. 2012 August; 4(8): 1202–1211. PMCID: PMC3446757lunes, 23 de septiembre de 2013
EMERGENCIAS: Prácticas Sanitarias para Jeringas Desechables
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| Vacunación |
La OPS/OMS recomienda las normas siguientes:
- Las jeringas "autodestructibles" [a] son el tipo preferido de inyecciones desechables con el que se aplican vacunas y el material escogido para llevar a cabo campañas de inmunizaciones en gran cantidad de gente.
- Los trabajadores de la salud no deben rehusar las agujas.
- Las jeringas desechables usadas deben recolectarse en "Cajas de Seguridad", que son contenedores resistentes a perforaciones, diseñados para colectar equipo de inyecciones.
- Las "Cajas de Seguridad" o contenedores similares donde se recolectan equipo de inoculación contaminado, debe ser transportado con mucho cuidado a un sitio de incineración.
- Si no existen o no están en servicio las instalaciones o sitios para incineración, las "Cajas de Seguridad" se pueden quemar en una fosa o algo parecido, por ejemplo un barril metálico. Las agujas quemadas se pueden enterrar de una manera segura o eliminadas con otra basura.
- No cumplir con estas normas puede poner en riesgo la salud pública ya que el material de inoculación podría ser utilizado de nuevo exponiendo a la gente a enfermedades y a la muerte.
- Los trabajadores de la salud que rehusan agujas se arriesgan a contraer enfermedades infecciosas debido a pinchazos accidentales. El público podría pincharse accidentalmente si las agujas y jeringas no son destruidas de una manera apropiada.
Recuerde: toda inyección debe administrarse con una aguja y jeringa estéril.
a. Jeringas autodestructibles son jeringas desechables que contienen un mecanismo por el cual automáticamente no pueden ser rehusadas después de la primera vez.
REFERENCIA:
http://www.paho.org/disasters/index.php?option=com_content&task=view&id=555&Itemid=664
viernes, 20 de septiembre de 2013
VIDEO: Problemas sanitarios durante el terremoto en México - 1985
Esta producción describe los problemas sanitarios y las actividades de socorro realizadas a raíz de los terremotos del 19 y 20 de septiembre de 1985 en México. El primer sismo, de magnitud 8,1 en la escala de Richer, dejó más de 10.000 muertos o desaparecidos y miles de heridos.
miércoles, 18 de septiembre de 2013
Efficacy of disinfectants against naturally occurring and artificially cultivated bacteria.
Abstract
Naturally occurring bacteria, is exist in nature, and is never cultivated on conventional culture medium. We evaluated the efficacy of disinfectants against naturally occurring bacteria in in-use cotton balls soaked in 0.02% benzalkonium chloride solution which had been used to disinfect the genital area by patients undergoing self-catheterization at home and the same bacteria subcultured on nutrient broth (artificially cultivated bacteria). The colony forming units (CFU) of naturally occurring bacteria such as Serratia marcescens, Alcaligenes xylosoxidans, and Burkholderia cepacia were not decreased after 48 h exposure to 0.025-0.1% benzalkonium chloride solution, but the same strains subcultured on nutrient broth were killed within only 10 min exposure to 0.025-0.1% benzalkonium chloride solution. In addition, the CFU of these three kinds of naturally occurring bacteria were not decreased after 48 h exposure to 0.02% chlorhexidine gluconate solution, but the same strains subcultured on nutrient broth were killed within 2 h exposure to chlorhexidine gluconate solution. The result showed that disinfectant efficacy differed markedly against naturally occurring and artificially cultivated bacteria. Therefore, it is preferable to use the naturally occurring bacteria not only artificially cultivated bacteria when examining disinfectant efficacy.
REFERENCE:
Suwa M, Oie S, Furukawa H. Efficacy of disinfectants against naturally occurring and artificially cultivated bacteria. Biol Pharm Bull. 2013;36(3):360-3. PubMed PMID: 23449324.
Naturally occurring bacteria, is exist in nature, and is never cultivated on conventional culture medium. We evaluated the efficacy of disinfectants against naturally occurring bacteria in in-use cotton balls soaked in 0.02% benzalkonium chloride solution which had been used to disinfect the genital area by patients undergoing self-catheterization at home and the same bacteria subcultured on nutrient broth (artificially cultivated bacteria). The colony forming units (CFU) of naturally occurring bacteria such as Serratia marcescens, Alcaligenes xylosoxidans, and Burkholderia cepacia were not decreased after 48 h exposure to 0.025-0.1% benzalkonium chloride solution, but the same strains subcultured on nutrient broth were killed within only 10 min exposure to 0.025-0.1% benzalkonium chloride solution. In addition, the CFU of these three kinds of naturally occurring bacteria were not decreased after 48 h exposure to 0.02% chlorhexidine gluconate solution, but the same strains subcultured on nutrient broth were killed within 2 h exposure to chlorhexidine gluconate solution. The result showed that disinfectant efficacy differed markedly against naturally occurring and artificially cultivated bacteria. Therefore, it is preferable to use the naturally occurring bacteria not only artificially cultivated bacteria when examining disinfectant efficacy.
REFERENCE:
Suwa M, Oie S, Furukawa H. Efficacy of disinfectants against naturally occurring and artificially cultivated bacteria. Biol Pharm Bull. 2013;36(3):360-3. PubMed PMID: 23449324.
martes, 17 de septiembre de 2013
Communicable disease control in emergencies - A field manual
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| Publication details Pages: 301 Pub. date: 2005 Language : English ISBN 924154616 6 Download English |
This manual is intended to help health professionals and public health coordinators working in emergency situations prevent, detect and control the major communicable diseases encountered by affected populations. Emergencies include complex emergencies and natural disasters (e.g. floods and earthquakes). The term “complex emergencies” has been coined to describe “situations of war or civil strife affecting large civilian populations with food shortages and population displacement, resulting in excess mortality and morbidity”.
In this manual, the generic term “emergencies” will be used to encompass all situations in which large populations are in need of urgent humanitarian relief. Following an emergency, the affected population is often displaced and temporarily resettled. They may be placed in camps or become dispersed among the local population (either in towns or in rural communities). People who are displaced across national borders are termed refugees whereas those who have been displaced within their country are called “internally displaced persons” (IDPs). Resettlement in camps may entail high population densities, inadequate shelter, poor water supplies and sanitation, and a lack of even basic health care. In these situations, there is an increased threat of communicable disease and a high risk of epidemics.
lunes, 16 de septiembre de 2013
Sanitizer Efficacy against Murine Norovirus on Stainless Steel Surfaces
AbstractHuman noroviruses are major etiologic agents of epidemic gastroenteritis. Outbreaks are often accompanied by contamination of environmental surfaces, but since these viruses cannot be routinely propagated in laboratory cultures, their response to surface disinfectants is predicted by using surrogates, such as murine norovirus 1 (MNV-1). This study compared the virucidal efficacies of various liquid treatments (three sanitizer liquids, 5% levulinic acid plus 2% SDS [LEV/SDS], 200 ppm chlorine, and an isopropanol-based quaternary ammonium compound [Alpet D2], and two control liquids, sterile tap water and sterile tap water plus 2% SDS) when delivered to MNV-1-inoculated stainless steel surfaces by conventional hydraulic or air-assisted, induction-charged (AAIC) electrostatic spraying or by wiping with impregnated towelettes. For the spray treatments, LEV/SDS proved effective when applied with hydraulic and AAIC electrostatic spraying, providing virus reductions of 2.71 and 1.66 log PFU/ml, respectively. Alpet D2 provided a 2.23-log PFU/ml reduction with hydraulic spraying, outperforming chlorine (1.16-log PFU/ml reduction). Chlorine and LEV/SDS were equally effective as wipes, reducing the viral load by 7.05 log PFU/ml. Controls reduced the viral load by <1 log with spraying applications and by >3 log PFU/ml with wiping. Results indicated that both sanitizer type and application methods should be carefully considered when choosing a surface disinfectant to best prevent and control environmental contamination by noroviruses.
REFERENCE:
Bolton SL, Kotwal G, Harrison MA, Law SE, Harrison JA, Cannon JL. Sanitizerefficacy against murine norovirus, a surrogate for human norovirus, on stainless steel surfaces when using three application methods. Appl Environ Microbiol. 2013 Feb;79(4):1368-77. doi: 10.1128/AEM.02843-12. Epub 2012 Dec 21. PubMed PMID: 23263949; PubMed Central PMCID: PMC3568589.
viernes, 13 de septiembre de 2013
WHO: Emergency Response Framework
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| Download |
REFERENCE:
WHO: Emergency Response Framework. ISBN 978 92 4 150497 3
miércoles, 11 de septiembre de 2013
Guidelines for Infection Control in Dental Health-Care Settings
This report consolidates previous recommendations and adds new ones for infection control in dental settings. Recommendations are provided regarding 1) educating and protecting dental health-care personnel; 2) preventing transmission of bloodborne pathogens; 3) hand hygiene; 4) personal protective equipment; 5) contact dermatitis and latex hypersensitivity; 6) sterilization and disinfection of patient-care items; 7) environmental infection control; 8) dental unit waterlines, biofilm, and water quality; and 9) special considerations (e.g., dental handpieces and other devices, radiology, parenteral medications, oral surgical procedures, and dental laboratories). These recommendations were developed in collaboration with and after review by authorities on infection control from CDC and other public agencies, academia, and private and professional organizations.
REFERENCE:
Guidelines for Infection Control in Dental Health-Care Settings, 2003. MMWR, December 19, 2003:52(RR-17).
Puede también descargarlo AQUI
REFERENCE:
Guidelines for Infection Control in Dental Health-Care Settings, 2003. MMWR, December 19, 2003:52(RR-17).
Puede también descargarlo AQUI
Recommendations on the Transport of Dangerous Goods, Model Regulation. Book UNECE 2013
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| Published:July 2013 ST/SG/AC.10/1/Rev.18 Complete set of two volumes Sales No. 13.VIII.1 ISBN 978-92-1-139146-6 Price: US$ 155 Languages: E, F (A, C, R forthcoming) UNECE.ORG |
This eighteenth revised edition contains various new and revised provisions concerning, inter alia, classification of solid oxidizing substances; transport of adsorbed gases; lithium batteries (including damaged or defective lithium batteries, lithium batteries for disposal or recycling); asymmetric capacitors; discarded packagings; ammonium nitrate and radioactive material; testing of gas cartridges and fuel cell cartridges; marking of bundles of cylinders; and the applicability of ISO standards to the manufacture of new pressure receptacles or service equipment.
UNECE: United Nations Economic Commision for Europe
Versión 2009 en Español
lunes, 9 de septiembre de 2013
Emergency First Responder Respirator Thermal Characteristics: Workshop Proceedings
REFERENCE
NIOSH Emergency First Responder Respirator Thermal Characteristics: Workshop Proceedings
National Institute of Standards and Technology Special Publication 1123
Natl. Inst. Stand. Technol. Spec. Publ. 1123, 52 pages (June 2011)
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