British scientists have found out how the main symptoms of COVID-19 have changed, given the fact that a year ago the alpha strain of the coronavirus prevailed, and now - the delta. The results of the study were published on the medRxiv preprint server..

In the course of the work, specialists analyzed more than five million results of PCR tests conducted in the UK from April 26, 2020 to August 7, 2021, as well as patient records..

Approximately 28 thousand, or 0.67% of the tests were positive.

Currently, four symptoms are used for the initial detection of COVID-19 in Britain: loss of taste, smell, fever, dry cough..

However, in the US Centers for Disease Control and Prevention screening protocols, they are much broader and include fever or chills, cough, shortness of breath, loss of taste and smell, fatigue, muscle or body aches, headache, sore throat, nasal congestion, runny nose,.

The study found that between April and December 2020, when alpha was the main circulating strain in the UK and the vaccination campaign had not yet started, patients mostly reported sore throat, coughing, fever, loss of taste and smell..

After May 2021, when the delta variant became dominant, in addition to the four " Including this symptom, along with a sore throat and a runny nose, was observed in partially vaccinated individuals..

Approximately one in two of those infected with the delta variant complained of muscle pain, weakness and fatigue, and one in three complained of loss of smell and taste..

It is noteworthy that all these symptoms were more pronounced in young people aged 20-30 years and decreased with age..

The authors emphasize that the set and strength of the manifestations of coronavirus depend on the viral load and vaccination status - after the first dose of vaccination, the likelihood of a symptomatic course of COVID-19 generally decreases..

For the delta variant, which dominates in most European countries, the primary signs of COVID-19 are weakness and fatigue, followed by headaches, muscle aches, cough, loss of smell and taste..

medRxiv publishes preliminary scientific reports that are not peer-reviewed and therefore should not be construed as definitive, as guidelines for clinical practice, or as established information..

Earlier it was reported that the coronavirus in Ukraine increasingly affects young people, and its first symptom is gastrointestinal disorders.

News from in Telegram. Subscribe to our channel https: // t. me / korrespondentnet Author: 1.