IMMUNOLOGY

Detailed explanation-1: -Two different kinds of vaccine are available: An inactivated (killed) polio vaccine (IPV) developed by Dr. Jonas Salk and first used in 1955, and. A live attenuated (weakened) oral polio vaccine (OPV) developed by Dr.

Detailed explanation-2: -Polio vaccine provides the best protection against polio disease. Two types of vaccines are used to prevent polio disease– inactivated polio vaccine (IPV) and oral polio vaccine (OPV). CDC and its international partners have made significant progress towards polio eradication.

Detailed explanation-3: -A vaccine consisting of inactivated poliovirus (IPV) types 1, 2 and 3, with active immunizing activity against poliomyelitis. Upon intramuscular vaccination, inactivated poliovirus vaccine (IPV) activates the immune system to develop antibodies against polioviruses. US brand name: IPOL.

Detailed explanation-4: -Salk tested his experimental killed-virus vaccine on himself and his family in 1953, and a year later on 1.6 million children in Canada, Finland and the USA. The results were announced on 12 April 1955, and Salk’s inactivated polio vaccine (IPV) was licensed on the same day.