
Topic
Free account · your comment posts right after signup
Not who you're looking for? Others named vaccine: 2021 single by NoCap · single note trumpet · scientific journal
“It is courage based on confidence, not daring, and it is confidence based on experience.”
“Vaccines not only protect individual children from measles, but also contribute to community immunity, protecting those who are unable to be vaccinated due to medical reasons.”
Quotes via Wikiquote (CC BY-SA), each with its original source.
A vaccine is a biological preparation that provides active acquired immunity to a particular infectious or malignant disease. The safety and effectiveness of vaccines has been widely studied and verified. A vaccine typically contains an agent that resembles a disease-causing microorganism and is often made from weakened or killed forms of the microbe, its toxins, or one of its surface proteins. The agent stimulates the immune system to recognize the agent as a threat, destroy it, and recognize further and destroy any of the microorganisms associated with that agent that it may encounter in the future.