What the 4 Biosafety levels (BSL) are

Gli agenti infettivi sono classificati in relazione alla sicurezza biologicInfectious agents are classified according to biological safety.

Bacteria, viruses, parasites and fungi are microorganisms that could cause infection, allergy or intoxication in humans. Infectious agents are divided into four groups according to the risk of infection for individuals and communities, which varies from zero, low, up to moderate and high risk.


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