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Vaccines : Proven to be safe after a two decade study


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There have been many doubts from naysayers who criticize the usage of vaccines as they claimed it could make their child get autistic and how it would make them get infected with the disease they are trying to prevent instead.

A recent US study that was conducted for over a 20-year period recently revealed that they have debunked the myths and shown that vaccines are relatively safe via existing postmarketing surveillance programmes, stated the authors.

The vaccines that were approved by the Food and Drug Administration (FDA) – the initial and subsequent labels – between 1 January 1996 and 31 December 2015 were included in the retrospective cohort study.

Out of the fifty-seven FDA-approved vaccines that were analysed, fifty-three (93 percent) initially had approval that were supported by randomized controlled trials, with a median cohort size of 4,161 participants.

There were similarities in the initial approval trial characteristics in vaccines with and without postmarketing, safety-related label modifications. The most common safety issue prompting label modifications was the expansion of population restrictions, followed by allergies with postmarketing surveillance as the most common source of safety data.

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