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Vaccines: Why Do Vaccines Protect Against?

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What do vaccines protect against?
Vaccines protect us against infectious diseases. Diseases are an interruption, cessation, or disorder of body functions, systems, or organs (Merrill, Timmreck, 2006). Vaccines aid the immune system when warding off infectious diseases. Passive immunity involves the transfer of antibodies to one person produced by another person (Merrill, Timmreck, 2006). Passive immunity is not considered a vaccine but can help in fighting short-lived infections. Passive immunity may be acquired through trans placental transfer or breast feeding (Merrill, Timmreck, 2006). Passive immunity helps infants born to mothers that have survived disease. Vaccines are used through active immunity to help the human body vade off invading
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Yes, vaccines can eradicate infectious diseases. The smallpox vaccine was eradicated through vaccination of children. This was achieved through herd immunity. Herd immunity is based on the notion that if the herd (a population or group) is mostly protected from a disease by immunization, then the chance that a major epidemic is limited (Merrill, Timmreck, 2006). Once a breakout was reported in the towns of Somalia, the vaccination team went to work in vaccinating everyone in the vicinity of the outbreak. It worked as long as they kept up with vaccinations, otherwise the outbreak spread outside of the herd immunity. Herd immunity provides barriers to direct transmission of infections through the population (Merrill, Timmreck, 2006). Host-control and prevention also play a viable role in eradication of infectious diseases. Protective measures include quarantine, isolation, sanitation, good hygiene, and chemoprophylaxis (Merrill, Timmreck, 2006). Environmental control is also another prospect that helps in the aid in the eradication of infectious diseases. Environmental control is aimed at providing clean and safe air, water, milk, and food (Merrill, Timmreck,
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