Why does a fever come back a few days after it subsided? Doctors remind you!

Recently, many people have gradually recovered, but new problems have also emerged. Some netizens reported that their condition recurred a few days after they recovered.

Cui Song, a member of the Shanghai Health Science Expert Database and chief physician of Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, reminds that during the recovery process, one should not rush to participate in high-intensity activities immediately, avoid fatigue, rest is very important, and nutrition should be supplemented at the same time.

Q: Some netizens have reported that they were too tired at work after taking a two or three-day break, or that they were a bit "letting themselves go", which led to relapses. What should we pay attention to after recovering from COVID-19?

Cui Song: The new coronavirus we encountered this time is actually something that the human body has never seen before, so we must pay enough attention to it. Everyone's reaction to this virus is not exactly the same. We cannot say that it will be cured in a few days. From our observation, the recovery time varies. The working efficiency of each person's immune system and underlying diseases are different.

We also found that some people suddenly had a fever on the 7th day of recovery because they did not rest well. A small number of people with fever also had lung problems. So even if you recover, you still have to be careful about your body in the short term. You can't let yourself go as soon as the fever subsides or the test turns negative. You still have to be careful for a period of time after recovery. What you need to do after recovery is to pay attention to rest, supplement nutrition, etc.

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In fact, the elderly are very careful. Some young people think that it is okay and they should lift weights or do something else. Exerting too much will cause problems. The human body's immune system is working in the process of fighting the virus. If you don't pay attention, your immunity will decrease. Once the virus is not completely eliminated, it may recur.

Q: How long does it take for the body to “transition” after recovery?

Cui Song: Everyone's body is different, so we can't generalize. Generally speaking, I think we need to wait for another two weeks. These two weeks are like a buffer period. Pay attention to yourself and give your body a transition period. Don't be too anxious to work hard after recovery. At least restore the body's original functions in these two weeks, rest more, and pay attention to supplementing nutrition. Maybe you had symptoms some time ago and couldn't eat much. Now that you have recovered, you should supplement what you need.

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Question: Why did the fever reappear after a few days after it had subsided?

Cui Song: When the new coronavirus enters the human body, it activates the human immune system to eliminate the virus that has entered the human body. When the immune system fights the virus, it will manifest as a high fever. The fever subsides only because the human immune system has temporarily controlled the situation and the virus has been suppressed. At this time, we should strengthen nutrition, get enough rest, and let the tired immune system be replenished and rested, so that we can further eliminate the virus and produce enough antibodies.

If you don't pay attention to rest and nutrition at this time, it may cause the disease to recur. Some people did not rest well, and after seven days, they suddenly started to have a fever again. Although the toxicity of the Omicron strain has been greatly reduced, it is a new type of virus that our human body has never encountered, and the human body reacts to it differently. So we still need to pay attention to it and not take it lightly. After the infection, if symptoms appear, in addition to taking medicine in time, we must pay attention to balanced nutrition and adequate rest.

Source: The Paper

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