On the 7th local time, Maria van Kerkhove, technical director of WHO’s health emergency program, said that the Omicron strain is spreading rapidly, and the strain has been found all over the world, as long as the virus has complete virus gene sequencing capabilities. Omicron strains have been detected in all regions.
In South Africa and Botswana, where the Omicoron strain was first identified, the level of transmission of the delta strain was low, and the Omicoron strain quickly became the predominant strain.
In other areas, the delta strain had been circulating intensively, and after the emergence of the Omicron strain, both strains spread simultaneously.
In some countries and regions, the Omicron strain is replacing the delta strain as the main circulating strain. However, in other countries and regions, the Omicron strain has not yet been able to replace the delta strain.