In the new work, scientists analyzed the results of a study of analyzes of 496 patients with COVID-19. They compared the course of the disease among those infected with the British strain and other variants of the coronavirus.
In 58% of the patients, the B.1.1.7 mutation, characteristic of the British strain, was detected, in the rest it was absent. Scientists compared mortality rates and severity of the disease and found no significant differences.
Scientists conclude, based on the research results, that existing vaccines against COVID-19 will remain effective from the British version. However, scientists have confirmed that the British strain has a higher degree of infectiousness: the spread of the strain was 1.35 times higher.
A second study was also published with a large sample: 36 thousand people. Participants reported a positive coronavirus test and described their symptoms throughout the illness on the COVID Symptom Study mobile app.
The authors compared the mean severity of symptoms and the incidence of re-infection with the density of the British strain in the region. It turned out that there was no correlation.