What impact would an increase of vaccinations have on a population’s viral infection cases? Explain why.
Answers
Answer:
Vaccines have a broad impact on health extending beyond the vaccinated individual.
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Vaccines can positively impact health, cognitive development and productivity.
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Broader success requires vaccine coverage sufficient to interrupt transmission.
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Immunisation can modify disease epidemiology requiring changes in vaccine strategies.
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Ensuring the continued success of immunisation is a shared responsibility.
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Answer:
Vaccine efficacy/effectiveness is interpreted as the proportionate reduction in disease among the vaccinated group. So a VE of 90% indicates a 90% reduction in disease occurrence among the vaccinated group, or a 90% reduction from the number of cases you would expect if they have not been vaccinated.
Most childhood vaccines are 90% to 99% effective in preventing disease. And if a vaccinated child does get the disease, the symptoms are usually less serious than in a child who hasn't been vaccinated. There may be mild side effects, like swelling where the shot was given, but they do not last long.
Although most attenuated vaccines are viral, some are bacterial in nature. Examples include the viral diseases yellow fever, measles, mumps, and rubella, and the bacterial disease typhoid.
Explanation: