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Reuters Dado Ruvic
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British scientists have identified changes in the main symptoms of ‘Covid-19’ over time, taking into account that the ‘alpha’ strain was dominant last year, and the ‘delta’ strain now.
And medRxiv says the study included the results of more than five million PCR tests in the UK during the period April 26, 2020 to August 7, 2021, and it was found that 28,000 of them (0 , 67%) were positive.
In Britain, four main symptoms are used to diagnose Covid-19 disease: loss of taste and smell, fever and dry cough. Symptoms listed in CDC protocols are much more numerous and include fever, chills, cough, shortness of breath, loss of smell and taste, fatigue, muscle pain, headache, sore throat, nasal congestion, colds, nausea. , vomiting and diarrhea.
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The results of the study showed that during the period April to December 2020, the British “alpha” strain was dominant in the UK, and the most common symptoms were sore throat, cough, fever, loss of taste and smell.
But after May 2021, the Indian strain “Delta” became dominant, which led to the addition of new symptoms to the four “traditional” symptoms, including severe headaches, so that some vaccinated against the disease were released. complained of headache and throat pain. Half of those infected with the “Delta” strain complained of muscle pain, weakness and fatigue, and a third of them had loss of smell and taste.
Interestingly, these symptoms appeared in young people between the ages of 20 and 30 and disappeared in those who are older, only to appear in a small percentage in the elderly. In addition to the main symptoms of “Covid-19” in the winter of 2020-2021, there are signs of other viral respiratory diseases, as well as symptoms of intestinal diseases associated with seasonal microbes.
According to the researchers, the first symptoms of the “delta” variant, which is currently prevalent in most European countries, are weakness, fatigue, headache, muscle pain, coughing and loss of smell and smell. taste.
Source: RIA Novosti
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