Question

mention the four ways in which vaccine are produced ?​

Answer 1

Answer:thanks...........

Explanation:

Vaccines are made by taking viruses or bacteria and weakening them so that they can't reproduce (or replicate) themselves very well or so that they can't replicate at all. Children given vaccines are exposed to enough of the virus or bacteria to develop immunity, but not enough to make them sick.............

Answer 2

Answer:

• Live virus vaccines use the weakened (attenuated) form of the virus. ...
• Killed (inactivated) vaccines are made from a protein or other small pieces taken from a virus or bacteria. ...
• Toxoid vaccines contain a toxin or chemical made by the bacteria or virus.