Fifteen scientists launch critique of Russia's COVID-19 vaccine data

A group of scientists sent a formal letter to the Lancet on Monday outlining doubts about the accuracy of early data on Russia's COVID-19 vaccine, one of the authors said, adding further fuel to a dispute surrounding the "Sputnik-V" shot. Fifteen scientists from five countries signed the letter presenting their concerns to the international medical journal, Enrico Bucci, biologist adjunct professor at Philadelphia's Temple University, told Reuters. The official letter came days after a larger group of scientists - including the 15 - signed an open letter to the Lancet's editor, published on Bucci's personal blog, after the journal published the early-stage trial results from Moscow's Gamaleya Institute.