Currently, a large number of people infected with the new coronavirus are gradually getting better, and many people have returned to work one after another. Some people began to take care of their relatives who were infected after being "well". Many people are worried that if the strain of the new coronavirus is different, will they be infected by the new coronavirus again? Zhang Boli, an academician of the Chinese Academy of Engineering, answered questions related to the secondary infection of by the new coronavirus .
Zhang Boli, academician of the Chinese Academy of Engineering. Photo by Xie Yu
"Yangkang"
The probability of secondary infection is low within 3 to 6 months
"The probability of reinfection with the new coronavirus is mainly related to the human immunity level, virus strain mutation and later personal protection." Zhang Boli said that compared with early mutant strains, the strains of the Omicron family can cause more breakthrough infections and repeated infections, and can escape the antibodies in people who have recovered from the new coronavirus infection.
However, Zhang Boli said that everyone should not worry too much. Although there is no large-scale population evidence to show the specific time for sustained immunity after infection with the Omicron variant, the human immune system is already functioning after infection with the new coronavirus. Current clinical observations show that the probability of secondary infection with the new coronavirus within 3 to 6 months after infection is still relatively low.
Many people are worried that a second infection with the new coronavirus will worsen symptoms. Zhang Boli said that the situation of a second infection with the new coronavirus varies from person to person. And after secondary infection, the severity of the disease is related to various factors such as the viral infection dose, the pathogenicity of the new coronavirus variant, and personal health status. However, judging from most current reports, because the body has developed immunity, the symptoms of the second infection will generally be milder than the last time.
However, Zhang Boli emphasized that there are also a few studies reporting that compared with patients who have only been infected once, patients who are infected again have a higher risk of complications, including pulmonary, cardiovascular, diabetes, gastrointestinal and nervous system complications.
recommends that "Yangkang" receive the new crown vaccine after 6 months
"Although it is unlikely to be infected with the same new coronavirus variant strain again in a short period of time, people with poor immunity are prone to repeated infections, including the elderly. Elderly people, infants, people with underlying diseases, and people with immune deficiencies are at risk of secondary infection in the short term, especially when faced with new mutant strains," Zhang Boli said. In addition, people in high-risk positions such as doctors and nurses are in work environments with high risk of transmission, are exposed to many mutant strains, work intensively, and are at high risk of secondary infection.
"It is mainly a re-infection of the new coronavirus mutant strain, so personal protection must continue even after the infection turns negative." Zhang Boli emphasized that "Yangkang" can be vaccinated with the new crown vaccine after 6 months. It is best to adopt a sequential strategy and inject heterogeneous vaccines to strengthen the immune barrier .
For those who have recovered from the new coronavirus, the best way to prevent secondary infection during the epidemic is to implement protective measures, including wearing masks, paying attention to hand hygiene, paying attention to rest, frequent ventilation, and maintaining social distance. Especially for the elderly and children with "positive to negative" patients, they should keep warm, gather as little as possible, ensure good hygiene habits, pay attention to nutritious diet, enhance immunity, and reduce the risk of reinfection.
If reinfection occurs, you must first distinguish between "re-positive" and secondary infection. "Re-positive" occurs within 2-3 weeks after turning negative. Patients generally have no obvious clinical symptoms. The main reason is that the -positive detected by the fragment of the residual virus in the body is generally not contagious. Secondary infection generally occurs within a few months to one year after the first infection, which is equivalent to a new infection. Generally, there are clinical symptoms, and the viral nucleic acid load is high and contagious.
“Patients with ‘Fuyang’ do not need any further treatment, as long as they pay attention to rest, reasonable diet and nutrition."Zhang Boli reminded that patients with secondary infections need to undergo standardized treatment again, and must strictly protect themselves, self-isolate, and pay attention to protecting their families and colleagues to reduce the risk of epidemic spread.
Statement: This article is reproduced from Science and Technology Daily (ID: kjrbwx) and China News Network. Thank you!
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