Preventive vaccines are biological preparations that improve immunity against a particular disease. Preventive vaccines contain 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. Some widely used preventive vaccines are for diseases such as influenza, measles, mumps, polio, rubella,...
Arabic
Français
Español
Português
Deutsch
Türkçe
Dutch
Italiano
Russian
Romaian