The most popular transmission power is detected again

On September 24th, the Harbin Municipal Government News Office held a press conference on the epidemic prevention and control. The results of the Harbin epidemic virus gene sequencing results were the results of the Emicor Rong BA5.2 evolutionary branch. One of the strains.

Since the beginning of this year, there have been cases of Tianjin, Xi'an, Beijing, Beijing, Shanghai, Liaoning Dalian, Zhuhai, Guangdong, Sanya, Hainan, Zhejiang Jinhua, Heilongjiang Jiamusi and other places that reported infected with the Omikon BA.5 mutant strains and its evolutionary branch. Disease Control experts said that the virus variants were very fast, and 1 infected person could infected an average of 18 people.

Harbin epidemic virus department

One of the most popular popularity

On September 24th, the Harbin Epidemic Prevention and Control Press Conference was reported. From 0:00 on the 24th to 17:00, there were 6 cases of new native new crown virus infections in Harbin, including 3 cases of new crown pneumonia. In Xiangfang District, it is discovered for centralized isolation. Since the premiere of Harbin's outbreak on September 20, there were 24 confirmed cases and 14 asymptomatic infected. The newly -added diagnosis cases have been closed to designated medical institutions for isolation observation and treatment.

Yang Chao, deputy director of the Harbin Health and Health Commission, introduced that the first case of the Harbin epidemic was found in key groups of non -closed -loop management, and the rest were found in the control group. The gene sequencing is Omikon BA.5.2 evolutionary branch. It has the characteristics of fast communication speed, strong hiddenness, and strong contagious. It is one of the most popular popular plants in my country.

The proportion of diagnosis in cases is high, accounting for 60%. The epidemic dissemination chain is clear, showing the characteristics of clustering communication such as family and residential land.

One infected person can infect 18 people average

Fever cough nucleic acid is still negative

Since the end of 2021, Omikon BA.5 mutant strains have become the world's main popular mutated strains. Since the beginning of this year, my country has reported cases of Tianjin, Xi'an, Beijing, Beijing, Shanghai, Liaoning Dalian, Zhuhai, Guangdong, Sanya, Hainan, Zhejiang Jinhua, Heilongjiang Jiamusi, etc. Essence

Why is this strain called the most popular popular strain? The local epidemic caused by the recent reports of Omikon BA.5, which has recently reported in many places in my country.

In August of this year, Zhejiang Jinhua Yiwu reported on the local epidemic caused by Omikon BA.5.2 evolving branch. From August 2nd to August 14, Yiwu reported a total of 648 new crown virus -positive infections, of which 74 cases were of them, of which were of 74 cases were, of which were of 74 cases were, of which were of 74 cases, of which were of 74 cases were, of which were of 74 cases, of which were, of which were 74 cases, of which were of 74 cases. The confirmed cases, 574 cases are asymptomatic infected.

Wang Fengying, deputy director of the Jinhua City Health and Health Commission and director of the Center for Disease Control and Prevention, said that according to relevant research reports, the basic regeneration of the strain was 18.6, which was 5.6 times the original strain, 3.65 times of Delta plant, and Omikon BA. 2. 1.39 times. In layman's speaking, the basic regeneration is 18.6 that one infected person can be transmitted to 18 people average. In addition, the epidemic has obvious family aggregation. At present, more than 100 family clustering epidemic has been found, involving more than 300 cases.

In addition, the virus is more hidden. Wang Fengying introduced that the asymptomatic infection discovered by the epidemic accounted for higher. At the same time, a small number of infected people were also found to be a positive time lag in the time of the onset of the onset of the onset of fever, cough, and sore throat. spread.

Finally, the virus spacing is shorter. From the analysis of the epidemic situation in Yiwu, the virus has a short distance between the virus, with an average of 2-3 days. Some cases can be passed on to 1st generation in one day, and 5 generations of cases appear in just 6 days.

In September this year, Shenzhen also reported the local epidemic caused by the BA.5 mutant strain. Lu Hongzhou, Dean of the Third People's Hospital of Shenzhen, introduced that from the characteristics of the virus, BA.5 mutant strains have stronger replication and dissemination capabilities than BA.2 mutant strains. Studies also show that the BA.5 mutant strain can enter the host cells in about 2 minutes, and present the index of the upper respiratory tract in about 20-30 minutes. After 12-24 hours, the mature virus particles are released in the infected cells. Start detoxification and spread through droplets, gas solution and other methods.

Omikon BA.5 mutant strain

How should I prevent it?

Disease control experts said that from the current situation, its pathogenic force has not been significantly enhanced, and the recent prevention and control practice of several BA.5 mutant epidemic in China also reminds that existing prevention and control measures are still effective.

The BA.5 mutant strain still belongs to the Omeck Rong mutant strain. The propagation method is still mainly droplet transmission and contact dissemination. The most important way to prevent and control is to block the transmission pathway and protect it. Mask, hand hygiene and other protection, maintaining social distance, vaccination of new crown virus vaccines, etc.

In addition, do daily ventilation, cleaning and disinfection. In particular, pay special attention to the toilet toilet to cover before flushing water. Keep floor leaks bending water to prevent viruses from spread through gas solution and other methods.

Source: Beijing Daily

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