Health officials in the United Kingdom have said that the new coronavirus, Omicron strain, has the effect of preventing the onset of a virus called "BA.2" that is different from the currently mainstream virus when vaccinated. , Revealed an early analysis that the two viruses are not significantly different.
Among the Omicron strains, a virus called "BA.2", which is a strain different from "BA.1", which is currently the mainstream of the epidemic, has spread in Denmark and other countries, and is also a "mutant virus under investigation" in the United Kingdom. It is positioned as.
British health officials revealed on the 28th that 1072 cases of "BA.2" had been confirmed in England, where London is located, as of the 24th of this month.
At the moment, "BA.2" accounts for a small proportion, but initial data suggests that the infectivity is slightly higher than that of "BA.1".
In addition, in the initial analysis, at 2 weeks after the booster vaccination, the effect of preventing the onset was 63% for "BA.1" and 70% for "BA.2", showing no significant difference. It is said that.
Health officials will continue to analyze "BA.2", although no data on aggravation are available at this time.