Recently, the Omickron new crown mutant strain codenamed "Hellhound" (BQ.1.1) was "crazy" in Japan, and it also claimed that its contagiousness and mortality rate were very high. Today, , the Chinese Center for Disease Control and Prevention, , came to refute the rumors.
rumor about BQ.1.1 on Weibo . The Weibo master account can no longer search
0 Chinese Center for Disease Control and Prevention today announced the actual situation of BQ.1.1 , the key content is:
About the ratio of severe illness and death: BQ.1.1 is the first generation sub-branch of BQ.1, and the proportion of severe illness and death is significantly lower than that of the early prevalent mutant strains;
About the situation of my country: my country has 9 49 cases of BQ.1 and its sub-branch were detected in local cases in the province, and it has not been widely prevalent;
Regarding increased pathogenicity: No country has reported that the pathogenicity of BQ.1 and its sub-branches have increased pathogenicity. A recent Japanese animal study showed that the pathogenicity of BQ.1.1 may be the same or less than BA.5;
Regarding infection symptoms: After the healthy population is infected with the Omickron series of mutants, most of them are asymptomatic and mild;
Regarding response measures: insist on taking personal protection, maintaining healthy and civilized living habits, and actively getting vaccinated.
The full text of the Chinese Center for Disease Control and Prevention on BQ.1 (click on the picture to view the full text)
However, in the United States across the ocean, BQ.1 and its sub-branch (BQ.1.1) have become the mainstream Omickron mutant strain. According to the latest estimate of US CDCh, about 68% of positive cases in the United States are now caused by BQ.1/BQ.1.1. Currently, is in the United States, and BQ.1/BQ.1.1 has replaced BA.5 and has become the mainstream infection strain of the new crown epidemic in the United States.
The number of infections in the United States has exceeded 60%, becoming the mainstream infection strain | CDC statistics chart of the United States
According to reports from the US media, almost all treatment methods currently have no effect on it. Information from the National Institutes of Health shows that monoclonal antibody treatment, including Evusheld for patients with immunocompromised dysfunction, may no longer work for BQ.1 or BQ.1.1. Bebtelovimab (a monoclonal antibody produced by Eli Lilly ) also does not work on it, that is, has no specific drug in Western countries for BQ.1/BQ.1.1.
However, vaccine enhancement injection can be effective in preventing severe illness . According to the US media "Ground Truths", the situation of people who receive enhancement injection vaccine, even those with low immunity have better symptoms than those who have not received . In addition, in terms of "Long-Covid", BQ.1/BQ.1.1 is lighter than . Data shows that cases with symptoms of "Long-Covid" have decreased by 26% .
Research shows that BQ.1.1 is higher than BA.5.2.1's immune escape (vertical axis) and propagation ability (horizontal axis)
will continue to evolve with Omickron, and its space will not be too large, especially the evolution of propagation ability is almost close to its limit. Currently, the new submutants have R0 exceeding 18, which means that the spread rate of all other viruses is known to humans. Experts judge that the propagation power of BQ.1/BQ.1.1 may be higher than the current BA.5.2 and BF.7, but it is not much higher.
So to summarize, BQ.1/BQ.1.1 is the next generation of BA.5.2 and BF.7 mutant strains that are currently popular in my country. There is currently no evidence that has increased pathogenicity and toxicity, and its infectious ability is no lower than BA.5.2 and BF.7 , which are currently popular in my country. Getting vaccinated as soon as possible can have an effect in preventing severe illness . Whether
BQ.1/BQ.1.1 will become the mainstream virus mutant strain in the next wave of epidemic in my country is not known at this time, but one thing is certain that enhances self- immunity and administers vaccine as soon as possible are the most preferred to deal with the current new crown epidemic.
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