Mixing two different coronavirus vaccines could be effective, according to scientists at the University of Oxford.

According to Bloomberg, scientists have found that the combination of the first injection of the drug from Pfizer and the second from AstraZeneca, which must be given 4 weeks apart, produces the greatest immune response.

However, mixing these vaccines in the reverse order showed a slightly worse result. According to scientists, the highest level of antibodies is still provided by vaccination with two doses of Pfizer.

The results of their work will help more flexible use of coronavirus vaccines in those countries where it will be necessary.

However, not all vaccines can be combined. Two doses of the Russian Sputnik V vaccine, for example, contain different components, and one dose without the other will not provide the required level of protection.