Symptoms such as loss of smell and taste have become less pronounced in those who have contracted the “delta” type of coronavirus, Sergei Netesov, a virologist, Corresponding Member of the Russian Academy of Sciences, Head of the NSU Laboratory of Bionanotechnology, Microbiology and Virology, said in an interview with Izvestia.
At the same time, the infected have more frequent problems with the gastrointestinal tract, he said.
“Rather, there was an increase in the proportion of some symptoms and a decrease in others,” Netesov said, answering the question whether new symptoms of the disease “delta”, a variant of COVID-19, appeared. “There are fewer people who have impaired sense of smell and taste, and gastrointestinal symptoms are more common.”
The virologist associates this with a change in the “structure of the receptor-binding domain of the S-protein” and “specificity in relation to the cells with which it interacts.” “Apparently, he got in touch with them better. Such cells are found in the lungs, and on the walls of blood vessels, and in the intestines. It is very likely that this was the reason for the shift in symptoms, ”the scientist explained.
Earlier, doctors called an upset of the gastrointestinal tract as one of the characteristic symptoms of the Indian variant of the coronavirus. So, according to a pulmonologist at the Moscow Regional Research Clinical Institute named after V.I. M.F. Vladimirsky Alexei Nikishenkov, with the spread of the “delta” variant of the virus, patients' complaints of diarrhea and abdominal pain became more frequent. Disruption of the gastrointestinal tract manifests itself along with coughing, weakness and muscle pain, Nikishenkov said.