CH.1.1, which is concerned about Omircong, which is concerned about public opinion, said that the China Disease Prevention and Control Center said that this strain will not cause large -scale local popularity in the short term.
According to the WeChat public account "China Disease Control Dynamics" on Tuesday (January 31), China Disease Control said that CH.1.1 belongs to the sixth generation subcontraction of Omikon mutant plant BA.2.75EssenceThe latest research shows that due to the addition of new mutation positions, CH.1.1 has increased its immune escape ability.At the same time, a new mutant point (L452R) was once a characteristic mutation point of Delta mutant strain.However, it is worth noting that the mutant site also exists in many other Omikon mutations, such as BA.5.3 and BA.5.1.3.
CDC said that at present, no pathogenicity of CH.1.1 mutant strains is not seen, and further attention still needs to be paid.Generally, after the emergence of new strains, the case of infection must reach a certain scale and last for a period of time to initially determine whether the pathogenic force of the new strain changes.
CDC said that although the immune escape ability and communication advantage of the mutant strains have further enhanced, leading to increased risk of breakthrough infection and re -infection, there are already high -level neutralized antibodies in most people in China.There is a certain cross -protection effect on CH.1.1, and CH.1.1 will not cause large -scale local popularity in the short term.The fragile crowd (elderly people over 65 years old, patients with basic diseases, and those who have not been vaccinated) and those who are not infected still need to strengthen personal protection.
