Biotechnology has wide range of applications in animal and human health care both directly as well as indirectly. It’s direct use involves controlling the spread of a variety of diseases using gene manipulation at different levels. The indirect use is in manufacturing of nutritional food through single cell proteins and in detecting food contaminants through molecular probes.

Following approaches are used to control the diseases and thereby taking care of the human and animal health.

a) Providing immunity against the disease through the development of vaccine.
b) Early diagnosis of a disease.
c) Successful treatment of the disease.