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Can I re-infect COVID?What we know and don’t know



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You won’t know if the second appearance of symptoms is a new infection or the result of an old infection unless you go through a few checks.

Amanda Capritto/CNET

Since the beginning of the coronavirus pandemic, experts have been working hard to study whether patients who have recovered from COVID-19 Can be infected again. Although re-infection of the coronavirus is rare, several recorded cases appear to have occurred.Scientists are particularly interested in these cases because they can teach us a lot about How the coronavirus makes people sick,and how vaccine Maybe it can help end the pandemic.

There are also practical considerations. For example, if you have recovered from COVID-19, do you still need to wear a mask when you are out in public?you should vaccination When one is available, or do you not need one now?

Like many questions about the coronavirus, we still have many unknowns. Therefore, experts almost always advise you to pay more attention when making decisions that may affect your health or the well-being of others.

Here, we will introduce to you what the doctors know, and just as importantly, what they don’t know about COVID-19 reinfection, including things to pay attention to and steps you can take to protect yourself. This article is intended as a general overview, not a source of medical advice. If you think you may have COVID-19, This is how to find a nearby test site.

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Patients need to sign an appointment with a doctor outside the facility, and are not allowed to enter the room unless they receive a text message from the doctor to prepare for the treatment. Free N95 masks are being provided to those who are about to enter.

Sarah Tu/CNET

Should I worry about being infected again by COVID-19?

In most confirmed cases of reinfection, the patient first tests positive SARS-CoV-2, The virus that causes the COVID-19 disease, then tested negative at some point before testing positive for the second time. According to data from Johns Hopkins University, although dozens of cases have been reported, they account for only a small fraction of the total number of confirmed cases worldwide, which exceeds 45 million.

In other words, although reinfection can only occur in very limited circumstances, it is not common. Dr. Onyema Ogbuagu, an infectious disease expert at the Yale Department of Medicine, told Heathline: “Realistic experience shows that reinfection is very rare, but it is interesting to see whether there will be such seasonal changes and decreased immunity next year.”

Translation: Actually, you don’t have to worry about anything now.

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Recovering from COVID-19 may require bed rest.

Angela Lang / CNET

How do I know if I have been re-infected or COVID has never disappeared?

Some people who still feel unwell weeks or even months after initially testing positive for COVID-19 may still be the result of the initial infection, that is, “long-distance transporters.”

In other cases, doctors performed genetic analysis on virus samples collected from patients during the first infection, and then analyzed again during the second infection. If these samples show significant genetic differences, the scientists conclude that they are separate and unrelated infections.

Unless you have conducted extensive testing, you may not be able to determine whether the recurrence of COVID-19 is a real reinfection or an example of a long-distance coronavirus infection.

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In the waiting room of the doctor’s office, a sign on each chair asks patients not to sit.

Sarah Tu/CNET

Was the result of getting COVID-19 the second time good or bad?

Similarly, you will need COVID test results to determine whether your symptoms are related to your initial infection or whether it is a new infection.

For most viruses, the second infection is usually lighter than the first infection because the body has built antibodies against it. However, this is not always the case. Doctors about SARS-CoV-2 are still revealing. For some viruses, already having antibodies against the virus can actually make the second infection worse. Dengue fever and Zika virus are common examples.

For most patients who have had COVID-19 more than once, the symptoms are usually mild or absent at all, and they are infected with the virus again. However, some patients’ second disease is actually much more serious than the first infection. It is too early to determine which response is more typical, and there are few cases to study.

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It is difficult to say whether a second infection will make COVID-19 symptoms (such as dry cough, loss of taste and smell) worse or better.

Sarah Tu/CNET

If I have ever taken COVID-19, can I be immune?

The immune system is a network of complex organs, tissues, and cells that work together to protect the human body from diseases. There is no on/off switch. Rather, people may have varying degrees of immunity to specific pathogens or bacteria.

So far, doctors and scientists have avoided any strong demands for long-lasting immunity against COVID-19. According to epidemiologists, the virus is unlikely to be infected again in the first three months after being positive.

How does COVID-19 reinfection affect potential vaccines?

Until we really don’t know One or more vaccines are approved It is widely distributed, but doctors hope that the coronavirus vaccine can give people at least enough immunity so that they can return to normal life after vaccinating enough people. This is because in most cases, so far, COVID-19 patients do not seem to be infected with the virus a second time, which gives scientists hope that the vaccine is expected to work.

In fact, coronavirus reinfection cases can help researchers better understand how to best allocate and manage vaccines. For example, it may be necessary to give people regular booster injections to boost immunity until the virus is completely eliminated.

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A sign seen at Whole Foods Supermarket in Asheville, North Carolina, explained that they now require masks to be worn inside the masks, and if necessary, they will provide masks to customers.

Sarah Tu/CNET

If I have COVID-19, do I still need to wear a mask or maintain social distancing?

Every public health organization, including the US Centers for Disease Control and Prevention and the World Health Organization, recommends the same set of safety precautions to everyone, regardless of whether they have used COVID-19 in the past. (The only exception is the case of active infection, which requires stricter measures.) This means masks, social distancing, hand washing, Regular surface cleaning Since the beginning of the pandemic, experts have been telling us everything to do.

For more details, This is how to disinfect your house and car, Where can I buy the most popular mask styles with How to enjoy restaurant food more safely during the pandemic.

The information contained in this article is for educational and information purposes only, and not for health or medical advice. If you have any questions about medical conditions or health goals, be sure to consult a doctor or other qualified healthcare provider.


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