At present, many people infected with the new coronavirus are gradually recovering. However, many people worry about whether they will be infected again if the strain of the new coronavirus is different.
To this end, a reporter from Science and Technology Daily interviewed Zhang Boli, an academician of the Chinese Academy of Engineering, and asked him to answer questions related to the secondary infection of the new crown virus.
The probability of secondary infection is low within 3-6 months after turning negative
"The probability of re-infection with the new coronavirus is mainly related to the level of human immunity, the mutation of the virus strain, and the personal protection in the later stage." Zhang Boli said that compared with the early mutant strains, Omicron may cause more breakthrough infections and repeated infections.
However, Zhang Boli said that everyone should not worry too much. Although there is no evidence of a large sample of people showing the specific time of continuous immunity after infection with the mutated virus strain of Omicron, the human immune system has already played a role after infection with the new coronavirus.
According to current clinical observations, the probability of secondary infection with the new coronavirus within 3-6 months after infection is still relatively low.
At the same time, many people worry that a second infection with the new coronavirus will worsen symptoms.
In this regard, Zhang Boli said that the symptoms of secondary infection with the new coronavirus are related to various factors such as whether there is an underlying disease, the dose of virus infection, and personal physical condition.
However, judging from most current reports, since the body has developed immunity, the symptoms of the second infection will generally be milder than the previous one.
However, he emphasized that there are also a small number of studies reporting that compared with patients who have only been infected once, patients who are reinfected have a higher risk of complications, including pulmonary, cardiovascular, diabetic, gastrointestinal and neurological complications. disease.
It is recommended to get the new crown vaccine six months after recovery
"Although it is unlikely to be re-infected with the same mutant strain of the new coronavirus in a short period of time, people with poor immunity are prone to repeated infections, including the elderly, infants, people with underlying diseases, and people with immunodeficiency. There may be secondary infections in the short term. The risk of infection, especially when facing new mutant strains." Zhang Boli introduced that people in high-risk positions such as doctors and nurses have a high risk of transmission in the working environment, are exposed to many mutant strains, and have high work intensity. The risk is higher.
"In order to avoid re-infection of the mutated strain of the new coronavirus, personal protection must be continued after the negative change." Zhang Boli emphasized that "Yangkang" can receive the new crown vaccine after 6 months, and 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 infection, the best way to prevent secondary infection is to implement protective measures, including wearing masks, paying attention to hand hygiene, paying attention to rest, ventilating frequently, and maintaining social distance, etc., especially for the elderly and children Patients with "yang to yin" should keep warm, gather as little as possible, ensure good hygiene habits, pay attention to nutritious diet, enhance immunity, and minimize the risk of reinfection.
If there is re-infection, it is necessary to first distinguish between "recovery positive" and secondary infection.
"Fuyang" occurs within 2-3 weeks after turning negative. Patients generally have no obvious clinical symptoms, mainly due to the positive detection of residual virus fragments in the body, and are generally not contagious; and secondary infections generally occur several months after the first infection. Within one year, it is equivalent to a new infection, generally with clinical symptoms, and a high viral nucleic acid load, which is contagious.
"'Fuyang' patients generally do not need further treatment, just pay attention to rest, reasonable diet and nutrition." Zhang Boli reminded that patients with secondary infection need to undergo standardized treatment again, and strictly take personal protection and self-isolation to reduce the epidemic. risk of transmission.
(Science and Technology Daily reporter Chen Xi)