According to the ZOE COVID Symptom Study — the world’s largest COVID-19 study and a symptom-tracking app – vaccinated people initially develop the infection through frequent sneezing. At the same time, in unvaccinated people, it is considered a sign not of a coronavirus, but rather of a cold or allergy.
“Although many people who get COVID-19 may sneeze, this is not a one-hundred-percent symptom. This is a fairly common phenomenon, especially in the warm season,” the researchers added.
According to scientists, people who have been vaccinated and subsequently still infected with the coronavirus, even in a mild form, call sneezing one of the signs of the disease. This symptom is not among the twenty most common, among which high fever, loss of taste and/or smell, fatigue, headache, diarrhea, runny nose, shortness of breath, and persistent cough.
“If you have been vaccinated and start sneezing a lot for no reason, you should stay at home and take a COVID-19 test, especially if you live or work with people who are at high risk of infection,” the study authors concluded.
Earlier, scientists announced the danger of the Indian strain of SARS-CoV-2, including for vaccinated people: this variant of the virus has two key mutations in the receptor-binding domain, which approximately two to three times reduce the immune defense in vaccinated and ill patients.