Question

Vaccination against small pox means the introduction of

• A. Leucocytes obtained from an animal
• B. Antibodies produced in other animals
• C. Antibodies
• D. Actual weakened germs or attenuated small pox virus

Answer 1

The correct option is D Actual weakened germs or attenuated small pox virus

The smallpox vaccine is the only way to prevent smallpox. The vaccine is made from a virus either weakened or attenuated (has lost its ability to cause the disease), which is introduced into the blood. This helps in building the antibodies against the smallpox virus in the body. Smallpox was eradicated by this vaccination program, starting in 1967.