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Thursday, August 5, 2021

WHO claims further data is needed on planned booster vaccines

Pfizer/BioNTech has announced this week that they will seek regulatory approval on a third dose of their vaccine, for a so-called booster vaccine.

However, the World Health Organization (WHO) has said it was currently unclear whether booster vaccines will be necessary, until further data is needed.

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“We don’t know whether booster vaccines will be needed to maintain protection against Covid-19 until additional data is collected, but the question is under consideration by researchers,” the WHO said.

“There is limited data available on how long protection from current Covid-19 vaccine doses lasts and whether an additional booster dose would be beneficial and for whom.”

Pfizer and BioNTech have said that due to drop-offs in efficacy seen in Israel after six months, they believe a third dose may be necessary within six to twelve months after full vaccination.

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“While protection against severe disease remained high across the full six months, a decline in efficacy against symptomatic disease over time and the continued emergence of variants are expected,” a statement from the two companies read.

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