Ebola Transmitted via Infectious Aerosol Particles

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charlie

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Biosafety level 4

This level is required for work with dangerous and exotic agents that pose a high individual risk of aerosol-transmitted laboratory infections, agents which cause severe to fatal disease in humans for which vaccines or other treatments are not available, such as Bolivian and Argentine hemorrhagic fevers, Marburg virus, Ebola virus, Lassa virus, Crimean-Congo hemorrhagic fever, and various other hemorrhagic diseases. This level is also used for work with agents such as smallpox that are considered dangerous enough to require the additional safety measures, regardless of vaccination availability. When dealing with biological hazards at this level the use of a positive pressure personnel suit, with a segregated air supply is mandatory. The entrance and exit of a level four biolab will contain multiple showers, a vacuum room, an ultraviolet light room, and other safety precautions designed to destroy all traces of the biohazard. Multiple airlocks are employed and are electronically secured to prevent both doors from opening at the same time. All air and water service going to and coming from a biosafety level 4 (or P4) lab will undergo similar decontamination procedures to eliminate the possibility of an accidental release.

Agents with a close or identical antigenic relationship to biosafety level 4 agents are handled at this level until sufficient data are obtained either to confirm continued work at this level, or to work with them at a lower level.

Members of the laboratory staff have specific and thorough training in handling extremely hazardous infectious agents and they understand the primary and secondary containment functions of the standard and special practices, the containment equipment, and the laboratory design characteristics. They are supervised by qualified scientists who are trained and experienced in working with these agents. Access to the laboratory is strictly controlled by the laboratory director.

The facility is either in a separate building or in a controlled area within a building, which is completely isolated from all other areas of the building. A specific facility operations manual is prepared or adopted. Building protocols for preventing contamination often use negatively pressurized facilities, which, even if compromised, would severely inhibit an outbreak of aerosol pathogens.

Within work areas of the facility, all activities are confined to Class III biological safety cabinets, or Class II biological safety cabinets used with one-piece positive pressure personnel suits ventilated by a life support system.

http://en.wikipedia.org/wiki/Biosafety_level
 
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[BBvideo 560,340:1isdfar3]http://www.youtube.com/watch?feature=player_embedded&v=oG9eezhU2fI[/BBvideo]
 
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Medical Research Org CIDRAP: Ebola Transmittable by Air

The highly respected Center for Infectious Disease Research and Policy (CIDRAP) at the University of Minnesota just advised the U.S. Centers for Disease Control (CDC) and World Health Organization (WHO) that “there is scientific and epidemiologic evidence that Ebola virus has the potential to be transmitted via infectious aerosol particles,” including exhaled breath.

CIDRAP is warning that surgical facemasks do not prevent transmission of Ebola, and healthcare professionals (HCP) must immediately be outfitted with full-hooded protective gear and powered air-purifying respirators.

CIDRAP warns in regards to N95 respirators, “Healthcare workers have experienced very high rates of morbidity and mortality in the past and current Ebola virus outbreaks. A facemask, or surgical mask, offers no or very minimal protection from infectious aerosol particles.”

CIDRAP is now advising the CDC and WHO that proper “personal protective equipment (PPE) ensures that healthcare workers remain healthy throughout an outbreak.” Based on scientific research, CIDRAP recommends the minimum protection for healthcare professionals in high-risk settings is a “powered air-purifying respirator (PAPR) with a hood or helmet” that will filter 99.97% of all particles down to 0.3 microns in diameter.

But the minimum Internet-advertised price for a “qualified” 3M Veraflo respirator is $427.13, compared to about $.65 for an N95 facemask. With Liberia’s per capita GDP only $454 last year and the economy in shambles, there is no way the country’s healthcare professionals can afford to acquire the appropriate protective respirators.

http://www.breitbart.com/Big-Government ... ble-by-Air
 

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