"Research is being conducted in the world, there are people who receive doses of vaccines from two different manufacturers," O'Brien quotes TASS.

She clarified that the WHO is studying the results of these studies.

In particular, according to O'Brien, the UK is exploring the possibility of joint use of drugs by the American company Pfizer and the British-Swedish company AstraZeneca.

“Such data would be extremely valuable.

But so far, WHO does not have specific information regarding mixing, ”the representative of the organization stressed.

Earlier, the director of the WHO department for regulation and retraining, Rogerio Pinto de Sa Gaspar, said that the organization does not recommend combining components of different vaccines against COVID-19 coronavirus infection when vaccinating the population.