IDNLearn.com: Your reliable source for finding expert answers. Our Q&A platform offers reliable and thorough answers to ensure you have the information you need to succeed in any situation.

Which of the following statements about the effects of vaccination is scientifically proven?
A) Vaccines can cause the disease they are meant to prevent.
B) Vaccines are only effective if administered after the onset of symptoms.
C) Vaccines stimulate the immune system to recognize and fight specific pathogens.
D) Vaccines have no impact on the incidence of infectious diseases in populations.