A vaccine.
Vaccine
Vaccine
vaccine.
Vaccine This is any solution that is prepared to cause immunity against a specific disease, usually employing a non-harmful form of the disease agent (the virus or bacteria), as killed or weakened (inactive) to stimulate antibody production.
vaccine
No. The virus is grown in eggs, weakened or "killed", and then added to a solution with preservatives to make the vaccine. There is no blood.
A vaccine is essentially a weakened or dead version of the virus. This essentially "infects" you with the virus and causes the body's immune system to respond and create anti-bodies that will kill the real virus if it does ever get into your system.
American biologist Jonas Salk announced his (injectable) vaccine in 1955. This was based on chemically inactivated polio virus. Polish immigrant to US Albert Sabin's modern oral version, based on work by the Polish researcher Hilary Kaprowski, was licensed in 1962. Kaprowski had tested his version as early as 1950. Their solution involved ingesting a weakened strain of the live virus.
Astrazeneca is made from a weakened version of a cold commmon virus Adenovirus fro chimpanzees. it was modified and it does not cause illness.
A weakened or modified virus that is introduced into an organism to stimulate immunity is called a vaccine.
The active ingredient is the live, attenuated (weakened) measles virus.
Vaccine.