Il Covid muta Once again. The virus that has definitely changed since 2020, as are the symptoms thanks also to the massive spread of vaccines, seems to present itself in a new form. To date it seems that the swab positivity you arrive long after the first ones symptoms.
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If initially, in fact, the swab detected the virus even without symptoms, now there may be the case in which you have had symptoms for days but the swab is still negative. An anomaly compared to the first period of the pandemic that is encountered by a growing number of patients around the world and to report it is The Atlantic.
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Doctors and scientists are trying to understand what is happening, it is not easy to determine whether it is attributable to the mutations of the virus, to our immune system, to the sensitivity of the tests themselves or to a combination of various factors. A much debated hypothesis is that symptoms precede the positive test result not so much because the coronavirus has become “delayed bursting”, but simply because the disease starts earlier or, to put it better, the immune system activates much faster against. the virus. Another contention is that omicron subvariants more easily escape antigen tests in the early stages of the disease. But also the fact that the greater use of do-it-yourself tests compared to those in pharmacies can affect the quality of the results
Last updated: Wednesday 15 June 2022, 5:30 pm
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