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000001010833380908837211087030870870517908705657
cocacoala
 cocacoala      02.02.2020 - 00:32:49 , level: 1, UP   NEW
What could possibly go wrong?

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Prospero
 Prospero      31.01.2020 - 09:38:02 , level: 1, UP   NEW
„Poskytne to více příležitostí čínským výzkumníkům a náš příspěvek k výzkumu patogenů úrovně BSL-4 obohatí svět,“ uvedl George Gao z čínské akademie věd pro odborný časopis Nature.
https://www.nature.com/news/inside-the-chinese-lab-poised-to-study-world-s-most-dangerous-pathogens-1.21487#/b1

00000101083338090883721108703087087051790870520808705209
Prospero
 Prospero      31.01.2020 - 09:39:13 , level: 2, UP   NEW
Biosafety level 4 (BSL-4) is the highest level of biosafety precautions, and is appropriate for work with agents that could easily be aerosol-transmitted within the laboratory and cause severe to fatal disease in humans for which there are no available vaccines or treatments.[9] BSL-4 laboratories are generally set up to be either cabinet laboratories or protective-suit laboratories.[9] In cabinet laboratories, all work must be done within a class III biosafety cabinet.[9] Materials leaving the cabinet must be decontaminated by passing through an autoclave or a tank of disinfectant.[9] The cabinets themselves are required to have seamless edges to allow for easy cleaning. Additionally the cabinet and all materials within must be free of sharp edges in order to reduce the risk of damage to the gloves.[9] In a protective-suit laboratory, all work must be done in a class II biosafety cabinet by personnel wearing a positive pressure suit.[9] In order to exit the BSL-4 laboratory, personnel must pass through a chemical shower for decontamination, then a room for removing the positive-pressure suit, followed by a personal shower.[9] Entry into the BSL-4 laboratory is restricted to trained and authorized individuals, and all persons entering and exiting the laboratory must be recorded.[9]

As with BSL-3 laboratories, BSL-4 laboratories must be separated from areas that receive unrestricted traffic. Additionally airflow is tightly controlled to ensure that air always flows from "clean" areas of the lab to areas where work with infectious agents is being performed.[9] The entrance to the BSL-4 lab must also employ airlocks to minimize the possibility that aerosols from the lab could be removed from the lab. All laboratory waste, including filtered air, water, and trash must also be decontaminated before it can leave the facility.[9]

Biosafety level 4 laboratories are used for diagnostic work and research on easily transmitted pathogens which can cause fatal disease. These include a number of viruses known to cause viral hemorrhagic fever such as Marburg virus, Ebola virus, Lassa virus, and Crimean-Congo hemorrhagic fever. Other pathogens handled at BSL-4 include Hendra virus, Nipah virus, and some flaviviruses. Additionally, poorly characterized pathogens which appear closely related to dangerous pathogens are often handled at this level until sufficient data are obtained either to confirm continued work at this level, or to permit working with them at a lower level.[13] This level is also used for work with Variola virus, the causative agent of smallpox, though this work is only performed at the Centers for Disease Control and Prevention in Atlanta, United States, and the State Research Center of Virology and Biotechnology in Koltsovo, Russia.