Recently, multiple subtype variants of the Omickron coronavirus have accelerated worldwide, including emerging variants such as BA.2.75, BF.7, BA.4.6, etc., which have attracted the attention of the WHO. These variants may have stronger immune escape capabilities.

Recently, multiple subtype variants of Omickron new coronavirus have accelerated their epidemic around the world, including emerging variants such as BA.2.75, BF.7, BA.4.6, etc., which have attracted the attention of WHO . These variants may have stronger immune escape ability. WHO issued a warning that BF.7 is spreading around the world and "may become mainstream within a few weeks." my country has reported a local epidemic in the BF.7 branch. What are the characteristics of the new mutant strain BF.7 in ? What should we do in the face of new mutant strains? What is the popularity of

1, BF.7 in various places?

BF.7 is the abbreviation of BA.5.2.1.7. It is considered to be the third generation subtype derived from the Omickron BA.5 variant, with the BA.2.75 variant intersected. US Centers for Disease Control and Prevention COVID-19 data monitoring found that since the start of monitoring, the percentage of strains of BF.7 has increased to 4.6% in the short term, becoming the third largest mutant strain in the United States to detect the new coronavirus. In addition, in Europe, BF.7 accounts for 25% of the infected people in Belgium ; Germany, France and Denmark account for about 10%. What are the symptoms after

2 and BF.7 infection? The symptoms of

BF.7 variant strain after infection include high fever, persistent cough, physical pain, headache, sore throat, altered smell and loss of appetite. These symptoms are similar to those after infection with the early subtype variant of the new crown Omickron.

3. Is the vaccine effective against the Omickron mutation?

vaccination with new coronavirus vaccine is an effective prevention method. Compared with the previous variants, the Omickron mutation has a relatively large degree of mutation and is also relatively strong in immune escape ability, which has a certain impact on the existing vaccines and human neutralizing antibodies induced by previous infections. But immune protection not only relies on neutralizing antibodies, but also is related to cellular immunity and immune memory. Many research results show that the effectiveness of existing vaccines at home and abroad in preventing severe illness and death remains at a high level. my country's vaccine still has a good protective effect on severe illness and death caused by Omickron mutant strain , and strengthening immunity can further reduce the risk of hospitalization, severe illness and death. Although the mutant strain BF.7 has escaped, breakthrough infection has always existed, and re-infection of the new coronavirus also exists, it can still protect the body and the vaccine still works.

4. What should we do in the face of new mutant strains?

should actively cooperate with nucleic acid testing in accordance with the requirements of epidemic prevention and control. Omickron strain can spread rapidly in a short period of time and is highly hiding. Only after dynamic and repeated detection in a short period of time can it be effectively detected. Only after multiple nucleic acid tests can targeted control measures be taken in a timely manner to block the spread of the epidemic and prevent and control the spread of the epidemic.

Secondly, we should actively cooperate with all prevention and control measures at this stage and maintain good personal hygiene habits, including wearing masks, maintaining social distance, washing hands frequently, and ventilation. Although the Omickron mutant strain BF.7 is more contagious than the existing mutant strain, wearing a mask is still a very effective personal protection measure. Autumn and winter are not only the new coronary pneumonia, but also the high incidence of various respiratory infectious diseases. Scientific wearing of masks can effectively reduce the risk of transmission, prevent the spread of the epidemic, and reduce cross-infection. In addition, other personal protection measures should be taken, and people should wash their hands frequently, ventilate frequently, separate meals, use public chopsticks, and maintain a social distance of "1 meter line".

Source | Hubei Disease Control WeChat official account