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.
