The presence of P. falciparum, the main infectious agent of malaria in this area, in blood smears was investigated in 1 461 children living in 164 households during the dry season in March 2000.
As with many infectious agents, including polio and influenza, H.I.V. comes in several strains.
Second, many infectious agents have developed antibiotic resistances.
Molecular mimicry is the main postulated mechanism by which infectious agents induce autoimmune disease.
Human immunodeficiency virus type 1 (HIV-1) is the main sexually transmitted infectious agent in the world, affecting approximately 33 million people with 2.7 million new infections each year [ 1].
PrPSc is the main constituent of prions [1], the infectious agents causing transmissible spongiform encephalopathies (TSE).
2-Chloro-4-nitro/2-chloro-5-nitrobenzoic acids and 4-nitrobenzoic acid are promising new agents for the treatment of main infectious killing diseases in the world: immunodeficiency diseases and tuberculosis.
Interleukin-4 plays a key role in fighting bacterial infection; it's main role is in regulating immune reactions to infectious agents that have entered the blood and tissues, but that have yet to infiltrate individual cells.
The infectious agents and their resistance patterns are main factors driving disease severity.
The main hazard arising from cell cultures themselves is from infectious agents carried either by the cells or from the components of the culture medium.
