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Itâs not entirely clear why the length of acquired protection varies with different vaccines. A single dose of some vaccines provides lifelong immunity, while others require an additional dose (boosters) in order to maintain immunity.tâs not entirely clear why the length of acquired protection varies with different vaccines. A single dose of some vaccines provides lifelong immunity, while others require an additional dose (boosters) in order to maintain immunity.
A connection between the lack of booster vaccines and this outbreak was clear. A booster vaccine could have prevented the second diphtheria outbreak. It is important to stay up to date on booster vaccines to avoid incidences such as this. Why Do Some Infections Require Booster Vaccines? One can never be sure that a sickness wonât re-emerge and put them at risk. It is necessary to know whether a vaccine from a certain disease requires a booster later on. Booster need depends on a variety of factors including disease progression and immunological memory.