Nowadays, most people across the country have been infected with the new coronavirus once, but what we are infected with is Omicron . Omicron is characterized by high contagion but low toxicity. Most of them are asymptomatic or mild patients, and the proportion of severe patients is very small.
Experts said that being infected with Omicron once is equivalent to receiving the vaccine once, and a second infection of with will not occur within 3 to 6 months.
Of course, this is not absolute. If the next round of strains is a mutated strain that is different from the one we were infected with last time, there is also the possibility of reinfection.
Recently, news revealed that the XBB strain currently circulating in the United States is more harmful than Omicron, and now the XBB.1.5 strain has been detected in Shanghai. According to Ruijin Hospital A team cooperating with Fan Xiaohong from the Public Health Center said that there are three cases of XBB.1.5 in Shanghai, which are imported cases from abroad and have not caused local transmission.
Because we saw in the news that this strain mainly invades the human intestines and cardiovascular system, it may cause people to suffer from cardiovascular and cerebrovascular diseases and diarrhea, so many netizens began to stock up on montmorillonite powder crazily. Will the arrival of the
XBB strain lead to secondary infection? The Spring Festival happens to be a period of relatively large movement of people. Will there be another peak of infection? Will
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XBB cause secondary infection?
Experts said that the pathogenicity of XBB, BQ.1, and BQ.1.1 is similar to previous strains, but virus with enhanced immune evasion ability may spread more rapidly than Omicron.
If you encounter these strains, the probability of reinfection mainly depends on two aspects:
On the one hand, the strains encountered again overlap with BA.5 and BF.7. If the virus continues to mutate, the cross-protection effect decreases and may cause infection.
On the other hand, it depends on the level of the human autoantibody .
02
Do I need to stock up on montmorillonite powder?
Some time ago, everyone has been frantically buying ibuprofen , and in the past two days, they have started to rush for montmorillonite powder. So do we need to buy montmorillonite powder?
Generally speaking, viral diarrhea will not last more than a week. Experts say that if diarrhea occurs after COVID-19 infection, there are many reasons. COVID-19 itself will infect the gastrointestinal mucosa, leading to viral enteritis and diarrhea. In addition, intestinal flora imbalance and the patient's own basic diseases may cause or aggravate diarrhea, but patients do not need to be anxious.
There are many viruses that can cause diarrhea. The one we are familiar with is rotavirus infection. The frequency of viral diarrhea is generally more than three times a day. There are individual differences. The course of the disease is self-limiting and generally does not exceed one week. It only requires targeted treatment. The diet should be mainly light and easy-to-digest liquids and semi-liquids.
If you have diarrhea and eat less due to fever, vomiting, anorexia, etc., you can supplement oral rehydration salt according to your specific situation.
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Vaccination can still have an effect on XBB virus
October 5, Changping Laboratory, Peking University Biomedicine , Cao Yunlong, , associate researcher at the Frontier Innovation Center, posted on the social platform:
XBB’s immune evasion ability is currently the strongest among mutant viruses. Its immune evasion ability is significantly higher than BA.2.75.2 and bq.1.1, and also higher than BR.2, BM.1.1.1 and CA.1.
Liu Yulong, expert consultant to the Hong Kong SAR Government and chairman of the Scientific Committee on Vaccine Preventable Diseases, pointed out in an exclusive interview with Qiu Qianyi, Shenzhen TV Direct News reporter in Hong Kong, that the XBB.1 mutant virus strain has a strong immune evasion ability and may spread rapidly after entering the community.
However, Liu Yulong emphasized that the XBB virus will not cause more severe symptoms. As long as you are vaccinated, T cells in the body can still play an role against the XBB virus.
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Academician Zhong Nanshan said: herd immunity may be formed during the Spring Festival
The Spring Festival is about to usher in a large flow of people, and what everyone is most worried about is that there will be a peak of infection during this period.
Experts believe that whether herd immunity will be formed during the Spring Festival depends on the situation in each city. Herd immunity is a concept. It should be how many people are infected so that the virus can no longer spread easily. When this situation is reached, many people remain passive. For example, some community elderly hospitals are better protected and outsiders are not allowed in.
The vaccination rate of those elderly people is relatively low, and then the second wave may not be popular in these places now, and it will not be popular in the future. In short, the principle of our public health service is to constantly analyze the epidemic situation, constantly tell people where the risks are and protect them.
At present, the development direction of the epidemic is unknown. Everyone should still be more vigilant, but do not cause panic!
