Question

what are vaccines? how do they help us get immunity against a diseases​

Answer 1

Answer:

Vaccines give you immunity to a disease without you getting sick first. They are made using killed or weakened versions of the disease-causing germ or parts of the germ (called antigens). For some vaccines, genetic engineering is used to make the antigens used in the vaccine. It’s much safer to get a vaccine than to get the disease it prevents.

Answer 2

Answer:

it is a substance used to protect humans from infectious diseases caused by bacteria and viruses. it has antibodies and prevent diseases .,

Explanation:

hope it helps!