Biosafety level
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A biosafety level, or pathogen/protection level, is a set of biocontainment precautions required to isolate dangerous biological agents in an enclosed laboratory facility. The levels of containment ra
Essential features of a biosafety level 4 (BSL-4) laboratory
Dr Terrence Tumpey at US Centers for Disease Control, Atlanta, Georgia, US, working with influenza virus under biosafety level 3 conditions, with powered air-purifying respirator inside a biosafety cabinet (BSC).
CDC technician dons an older-model positive-pressure suit before entering one of the CDC's earlier BSL-4 labs.
Regular inspection of positive-pressure suits to locate any leaks
Marburg virus
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Marburg virus is a hemorrhagic fever virus of the Filoviridae family of viruses and a member of the species Marburg marburgvirus, genus Marburgvirus. It causes Marburg virus disease in primates, a for
Biosafety level
…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…
Marburg virus
Micrograph of the Marburg viruses
Colorized electron micrograph of a Marburg virus
The geographic distribution of Marburg virus and Egyptian fruit bats