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A vaccine is a biological preparation that improves immunity to a particular disease. Vaccines can be prophylactic (e.g. to prevent or ameliorate the effects of a future infection by any natural. — “Vaccine - Wikipedia, the free encyclopedia”, en.wikipedia.org
The Influenza vaccine, also known as a Flu Shot, is an annual vaccine to protect against the highly variable influenza virus. Each injected seasonal influenza vaccine contains three influenza viruses: one A (H3N2) virus, one regular seasonal. — “Influenza vaccine - Wikipedia, the free encyclopedia”, en.wikipedia.org
The human papillomavirus (HPV) vaccine may prevent infection with certain species of human papillomavirus associated with the development of cervical cancer, genital HPV vaccines are expected to protect against HPV induced cancers of. — “HPV vaccine - Wikipedia, the free encyclopedia”, en.wikipedia.org