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sir, can we prepare only one vaccine for all diseases?...
sir, can we prepare only one vaccine for all diseases?
Vaccines are products that stimulate a person's immune system to produce immunity (protection) to a specific disease, protecting the person from that disease. 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. It is a complex process that may take years to develop. At the moment there is not a vaccine that protects against all diseases. Find out about how vaccines work here. You can find out about the testing, approval and monitoring process here.