On April 15, who said that dozens of cases of Omicron Ba had been traced around the world 4 and ba 5 subtype mutant. It is reported that in addition to South Africa, Omicron ba 4 and ba 5 virus strains have been found in 20 countries around the world**
According to the health times, on May 2 local time, Dr. Farid Abdullah, a medical expert of the South African Medical Research Council (samrc), said at a press conference that in the next period of time, two new variants of the newly discovered Omicron variant strain ba 4 and ba 5. It is very likely to become the peak of a new wave of epidemic**
Scientists from the South African gene sequencing research institute said that a variant of the new virus Omicron subtype BA was found in South Africa this month 4 and ba 5, it is likely to escape the vaccine and the natural immunity of infected people .
South African expert turio said that with BA 2 and ba 1 compared to ba 4 and ba 5. The transmissibility may be higher
"From the data of various countries, the infectivity of the virus is higher than that of Omicron ba.2, but there are still relatively few cases in the world."
Yu ChuanHua, Professor of epidemiology and health statistics at Wuhan University, believes that any new strain will have more or less immune escape from the corresponding virus vaccine. The farther the genetic relationship of the virus is, the more serious the immune escape is. In the prevention and control of overseas import, we should improve the control of Omicron mutant ba 4 and ba 5. Don't relax your vigilance.
Data show that the Omicron mutant first appeared in South Africa and Botswana last November, and then swept the world. At present, the Omicron Ba dominates more than 99% of new cases in the world 2 subline variants.