How are vaccines tested? .your waiting for a vaccine but you don't know.. read more 👇

In the pre-clinical stage of testing, researchers give the vaccine to animals to see if it triggers an immune response.

of clinical testing, the vaccine is given to a small group of people to determine whether it is safe and to learn more about the immune response it provokes.

the vaccine is given to hundreds of people so scientists can learn more about its safety and correct dosage.

the vaccine is given to thousands of people to confirm its safety – including rare side effects – and effectiveness. These trials involve a control group which is given a placebo.