Source: Released by Ningbo
A few days ago, Jinhua reported Yiwu that the virus gene sequencing result of this epidemic was Omikerong BA.5.2 mutant strain . The Omicron BA.5.2 variant has the characteristics of , which is more contagious, has a higher effective reproduction number (Rt value), and spreads faster than . How should we respond to the Omicron BA.5.2 variant? Let’s take a look at ↓↓↓
What is the Omicron BA.5.2 variant?
The BA.5 subtype of the new coronavirus Omicron variant was first discovered in South Africa in February this year. In March, it was included in the monitoring list of the World Health Organization (WHO). Since June, BA.4/BA.5 has become the main epidemic strain in South Africa, Portugal, the United Kingdom, Israel, Mexico and other countries at a rapid rate. The latest analysis results of
Global Virus Gene Sharing Database (GISAID) show that BA.5 is currently the No. 1 Omicronian branch , and its proportion is rising rapidly. The World Health Organization mentioned in its global COVID-19 weekly report on June 29 that BA.4/BA.5 has replaced the previous BA.2 as the main global strain, and the number of hospitalizations in some countries has surged. How does
deal with the BA.5.2 variant?
Dong Xiaoping, chief expert of virology at the Chinese Center for Disease Control and Prevention, said in an interview with reporters in July, "The incubation period of the BA.4 and BA.5 sub-branches has been significantly shortened, reflecting the spread of the virus in the absence of or little public health intervention. The basic infection number (R0) of the situation is very high, which has put great pressure on the world. "But current data shows that the pathogenicity of has not changed significantly compared with other Omicron subdivisions, and the ninth version of the prevention and control plan remains. Applicable to .
Dong Xiaoping said that the immune evasion ability of the BA.4 and BA.5 sub-branches has been enhanced, but vaccination is still effective in preventing severe illness and death, and the effect on preventing infection remains to be observed with larger data. He called on people who are eligible for vaccination to complete the full course of vaccination and booster immunity against the new coronavirus vaccine as soon as possible.
Who needs booster shots? How to fight?
According to the current national immunization program, people who meet the following four conditions need to receive booster shots:
1. Over 18 years old;
2. Have completed 2 doses of inactivated vaccine (Beijing Bio, Beijing Sinovac , Wuhan Bio ) or 1 dose of adenovirus vector vaccine;
3. Completed the full course of vaccination for 6 months;
4. No booster immunization has been performed.
Depending on the basic immunity situation, you can have different choices:
① If you have received 2 doses of inactivated vaccine (Sinopharm Beijing Company, Wuhan Company, Sinovac Zhongwei Company), then you can choose to receive 1 more dose A dose of inactivated vaccine can be used as a booster shot. You can also choose to receive a dose of adenovirus vector vaccine or a dose of recombinant protein CHO vaccine as a booster shot.
② If you have received 1 dose of adenovirus vector vaccine (Tianjin CanSino), you can choose to receive another dose of adenovirus vector vaccine for homologous booster immunity.
③ If you have received 3 doses of recombinant protein CHO vaccine (Anhui Zhifei), you do not need to receive a booster shot.
Source: Ningbo Disease Control
