![]() ![]() Occasionally, very rare side effects (for example, myocarditis, which may occur at 12.6 cases/million doses of Pfizer vaccine) may occur slightly more frequently after a second (or booster) vaccine. These side effects resolve completely within 24-48 hours. Persons who have a booster vaccine may experience these common side effects more frequently. Common side effects include tiredness, body aches, and pains, low-grade fever, pain at the injection site. Side effects of booster vaccines are similar to side effects from a first vaccine. Therefore booster vaccines are helpful to improve protection from infection, especially during the fourth wave which is predominantly due to the Omicron variant. Laboratory testing has shown that high antibody levels are more effective at neutralising variants of SARS-CoV-2. Booster vaccination with the JnJ or Pfizer vaccine is a reliable and safe way of increasing antibody levels.īooster vaccination increases antibody levels and ‘T-cell responses’ to SARS-CoV-2. As early as the first clinical trials, vaccines have been shown to reduce but not prevent mild to moderate illness.Īs COVID variants has emerged, laboratory research has shown that protection against COVID-19 is related to antibody levels. Recently, vaccines have also been shown to reduce transmission of COVID-19 from one person to another. ![]() Taking a vaccine will protect you and your loved ones from a devastating illness and/or death. This lifesaving effect has continued, even as variants have emerged. United Kingdom) to reduce severe disease and mortality by up to 95-97%. Vaccines have been shown in controlled trials and in the evaluation of national vaccination programmes (e.g. Why should I get vaccinated if the vaccine already needs a booster shot to protect me? Are vaccines not effective?
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