At 11:00 a.m. on November 29, the Information Office of the People's Government of Zhejiang Province held the 80th press conference on the prevention and control of the new crown pneumonia epidemic.
At the meeting, Xia Shichang, deputy director of the Office of the Provincial Leading Group for Prevention and Control work and deputy director of the Provincial Health Commission, introduced that as of November 28, the whole territory of Hangzhou is a low-risk area, and all parts of Zhejiang must not take "layer by layer" control measures for personnel from the West Lake District and Hangzhou City; the improper measures that have been implemented should be corrected immediately.
On 28 November, there were 0 new confirmed cases and 0 asymptomatic infected people in Zhejiang. As of 24:00 on the 28th, Zhejiang has reported a cumulative total of 1501 confirmed cases (including 281 imported cases), 14 confirmed cases are currently treated in hospital (including 13 cases imported from abroad), and 78 asymptomatic infected people are still under medical observation (including 75 cases imported from abroad).
Xia Shichang introduced that at present, the Zhejiang Provincial Center for Disease Control and Prevention has completed the whole gene sequencing of the samples of 2 asymptomatic infected people with new coronavirus in Hangzhou, and the results have been confirmed by the Chinese Center for Disease Control and Prevention as the Delta variant, the virus sequence is highly homologous to the Shanghai case, the same chain of transmission, and the source of infection is exposure to the environment contaminated by imported viruses in other provinces and cities. Judging from the investigation of Shanghai, Jiangsu, Zhejiang and other provinces (cities) involved in the current epidemic, the epidemic has not caused further spread.
As of 9:00 a.m. on November 29, Zhejiang Province had investigated and implemented a total of 845 people and 2,117 people in isolation and control, with two rounds of nucleic acid test results at an interval of 24 hours, two rounds of nucleic acid screening were negative for 2 asymptomatic infected people living in the community and the closed management area of the workplace, and all the close contacts and sub-close contacts who were riding with the G7461 and D931 trains in Zhejiang with 2 asymptomatic infected people were negative for two rounds of nucleic acid testing. In addition to the above two asymptomatic infected people, there are no new local positive infected people in Zhejiang Province, and the overall situation of the epidemic is stable and the risk is controllable.
It is reported that Zhejiang focuses on promoting the new crown vaccination of people aged 3-11, strengthening immunization for people over 18 years old, and checking and filling in the work of personnel over 60 years old, further enhancing the consciousness and initiative of the masses to vaccinate vaccines, ensuring that people without contraindications "should be received" and key industry personnel are "responding to the connection", and building a national immunization barrier as soon as possible.
As of 24:00 on November 28, the province's population over 3 years old had received a total of 130 million doses, and 59.404 million people had been vaccinated in the whole process, of which 4.722 million doses of intensive injections were given to people over 18 years old, and 7.381 million doses were given to people aged 3-11.
"More contagious than Delta virus", "able to bypass part of the immune system", "may weaken the effect of the vaccine"...
Recently, strict prevention of the spread of the new coronavirus mutation strain, Aomi Kerong, has become a new target for global epidemic prevention. In the two days from the 26th to the 27th, many countries have imposed cross-border flight and travel bans on South Africa and several neighboring countries in South Africa and its vicinity, where the new strain was first reported.
Does Omi kerong have a big influence on China? Zhong Nanshan, Li Lanjuan, Zhang Wenhong, Wu Zunyou spoke...
How were mutated strains discovered?
WHO said on 26 November that the latest variant strain was first identified in South Africa on 9 November and first reported to WHO on 24 November.
Epidemiologically, the rate of COVID-19 infection in South Africa has risen sharply in recent weeks, in line with the detection of the B.1.1.529 variant. 90% of the recent new infections in Gauteng province, South Africa, are related to this variant.
What are the new features of the Omicron strain?
On the 27th local time, the scientific research team of the Children's Hospital in Rome, Italy, released the world's first picture of the mutated strain Omicron. The images show that the Omicron strain has more spike protein mutations than the Delta strain of the new coronavirus variant. These variants are diverse and mostly located in regions that interact with human cells. The researchers say the coronavirus has adapted further to the human body through mutations, but that doesn't necessarily mean it becomes more dangerous.
Comparison of Delta strain and Omicron strain spike protein mutation (Image from Rome Children's Hospital)
In addition, François Baru, a professor of biology at University College London in the United Kingdom, analyzed that the Omicron strain carries a series of unusual mutations, which may occur during the chronic infection of a case of low immunity, or it may come from an untreated AIDS patient.
The World Health Organization also said that the variant has a large number of mutations, some of which are worrying. WHO also said that the Omicron variant was detected faster than other variants that had previously caused a surge in infection, suggesting that this latest variant may have a growth advantage.
How to deal with the Omicron mutant strain?
Zhong Nanshan: It is too early to draw conclusions
On November 28, Zhong Nanshan, an academician of the Chinese Academy of Engineering, said in an interview that from the current situation, the Omicron mutation strain spreads quickly and has become popular in South Africa and other regions, and a case has recently been found in Hong Kong, China.
"This variant is very new, although molecular genetic testing found that it has more changes in the receptor binding site, but how harmful it is, how fast it will spread, whether it will make the disease more serious, and whether it needs to be developed for vaccines, but also judged according to the situation." It's too early to draw conclusions. ”
Zhong Nanshan said that the harm of the Omicron mutant strain still needs a period of judgment and needs to be paid attention to at any time, but it will not take a relatively large action now. "Another thing that needs to be paid more attention to is the prevention and control of personnel from relevant places in South Africa."
Li Lanjuan: China is neither careless nor panicked
Li Lanjuan, academician of the Chinese Academy of Engineering and director of the State Key Laboratory of Infectious Disease Diagnosis and Treatment, said in an interview with the media that it is still too early to judge the impact of the Omicron variant on the global epidemic, although more mutations mean that it may have higher transmission, or increase the risk of severe illness, or reduce the effectiveness of the current diagnosis, vaccines and therapies, but these are still the theoretical significance of mutations, in the real world, whether the Omicron variant will replace the Delta mutation to become a global epidemic strain. It will take time to observe.
She said that the virus mutation has always occurred, the current epidemic strain and the early outbreak of the strain have undergone obvious mutations, vaccines still have a protective effect on most of the mutated strains, so you do not have to worry too much.
Through two years of fighting the epidemic, China has successfully established a set of effective foreign defense input accurate experience, and China is neither careless nor panicked. However, it is still necessary to continue to strengthen the accurate management of overseas imported personnel. Li Lanjuan reminded the public that regardless of whether new variants appear, the importance of normalized prevention and control in China remains unchanged, and everyone should be vaccinated, wear a mask, maintain hand hygiene, and maintain social distancing.
Zhang Wenhong: Whether it poses a threat will remain a two-week observation
Yesterday, Zhang Wenhong, director of the Department of Infectious Diseases at Huashan Hospital affiliated to Fudan University, posted on Weibo: The epidemic in Shanghai has come to an end; the world is concerned about the new coronavirus mutation "Aomi Kerong", and it will take two weeks to observe whether Aomi Kerong poses a threat.
Why is it initially set within two weeks? He explained that this is because the global epidemiological data and virus neutralization test data will produce results in two weeks to several weeks, "these work our Fudan team and many brother scientific research teams in China are in sync."
Wu Zunyou: Measures such as wearing masks are effective for all mutated strains
At the 2022 annual meeting of Caijing held on the morning of November 28, Wu Zunyou, chief expert of epidemiology at the Chinese Center for Disease Control and Prevention, said that the "clearance" policy is China's "magic weapon" to control the epidemic, and this "magic weapon" has a very good effect; as long as we adhere to the normalization of prevention and control measures, we can prevent the epidemic of the Omiljung strain.
The global epidemic distribution is uneven, with key countries accounting for 60% of the total global epidemic, of which the most 10 countries account for more than 150 million, accounting for 60% of the world. "The mathematical model shows that Omexjong is more contagious than Delta, delta is more contagious, and we have already felt that it spreads fast, but one thing is clear, no matter how it mutates, our public health measures are effective." He said that public health measures such as wearing masks and maintaining social distancing are effective for all mutated strains.
Several vaccine manufacturers have begun to deal with Omi kerong
At present, a number of vaccine manufacturers said that they are studying the impact of Omicron on vaccines, and some manufacturers have begun to respond.
Wear a mask, wash your hands frequently, and ventilate more
Keep going
Don't be careless!
Source: Zhejiang News Client, Zhejiang Publishing, CCTV News, People's Daily Client, etc