Infection & Immunity
The invasion of foreign organism on a host body for its growth and multiplication is termed as infection. The infection can lead to infectious diseases/ transmissible disease/ communicable disease. The infection can be caused by any infectious agents and their toxins causing several immune reactions like allergy, inflammation etc. Immune or allergic reactions arise upon infection due to the role of Host immune system to maintain immunity in the body. The infectious agents may be bacteria, virus, fungus, parasites, protozoans etc. As the agents vary, so does the route of transmission to enter into the host body and also the diseases, diagnosis and treatments. The immunity of an individual must be well enough to combat such infections. Immunity will be innately present in an individual from the mother through placenta and also later on through breast milk. Immunity will also be acquired by an individual during his/her lifetime through exposure to several allergens, microorganisms and foreign substances.
Effects of infectious disease
- Infectious agents and route of transmission
- Infectious diseases: diagnosis & treatment
- Cellular and hormonal immunity
- Virology and Infectious Diseases