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Scientists Cast Doubt on Results From Russian Covid Vaccine

  • Some study participants had identical levels of antibodies
  • Results published in the Lancet was the first data on vaccine
A syringe sits alongside a vial in a kidney dish in this arranged photograph taken at the Chaika Clinic in Moscow, Russia, on Monday, Aug. 10, 2020. Russia registered its first coronavirus vaccine, President Vladimir Putin said during a televised meeting with the government.
Photographer: Andrey Rudakov/Bloomberg
Updated on

A group of international scientists questioned results from a study of Russia’s fast-moving coronavirus vaccine that were published in the Lancet medical journal, saying some of the findings appeared improbable.

The researchers flagged concerns over seemingly identical levels of antibodies in a number of study participants who were inoculated with the experimental vaccine. This and other patterns in the data present “several different points of concern,” according to an open letter written by Temple University professor Enrico Bucci and signed by more than a dozen other scientists.