The vaccine for smallpox was developed by Edward Jenner. In 1796, Jenner used cowpox material to create immunity against smallpox, marking the first successful vaccine. This groundbreaking work laid the foundation for modern immunology.
Discussion Forum Latest Questions
The virus which causes hydrophobia due to dog bite is called rabies. Rabies is a viral infection transmitted through the saliva of infected animals, most commonly dogs, and affects the nervous system.
Hydrophobia, also known as rabies, is caused by viruses. Specifically, the rabies virus affects the nervous system, leading to symptoms such as fear of water and aggression. The virus is transmitted through the saliva of infected animals.
Refrigeration helps in food preservation by reducing the rate of biochemical reactions. It slows down the growth of bacteria and other microorganisms, thereby extending the shelf life of food and maintaining its quality.
Azotobacter is the free-living bacteria that increases the yield of paddy in the soil. It fixes atmospheric nitrogen into forms that are accessible to plants, thereby enhancing soil fertility and supporting crop growth.