Israeli researchers release data on fourth dose of COVID-19 vaccine

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Early data from Israel’s Sheba Medical Center showed that an additional booster of COVID-19 vaccine from Pfizer (NYSE:PFE) and BioNTech (NSDQ:BNTX) led to a fivefold increase in antibodies one week after receipt of the vaccine. 

Pfizer had earlier announced that a third dose of the vaccine increased antibody levels 25-fold compared to a two-dose primary series. 

Pfizer and BioNTech, along with their competitor Moderna (NSDQ:MRNA), continue to develop an omicron-specific version of their mRNA vaccine. 

The prospect of a fourth dose of the original vaccine for immunocompetent people may be more controversial than a third. 

While Israel has begun administering a fourth dose to some individuals, the head of the French vaccination program, Dr. Alain Fischer, said there was insufficient evidence at present to recommend an additional vaccine dose. France could dec…

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