biosafety level

Definitions of biosafety level

1. noun

   the level of safety from exposure to infectious agents; depends on work practices and safety equipment and facilities
   types:

   biosafety level 1

   exposure only to infectious agents that do not ordinarily cause human disease

   biosafety level 2

   exposure to infectious agents that can cause disease in humans but whose potential for transmission is limited

   biosafety level 3

   exposure to infectious agents that can be transmitted by the respiratory route and which can cause serious infection

   biosafety level 4

   exposure to exotic infectious agents that pose a high risk of life-threatening disease and can be transmitted as an aerosol and for which there is no vaccine or therapy

   type of:

   grade, level, tier

   a relative position or degree of value in a graded group