According to the news of CNBC, an application was used within the framework of the research called Zoe Covid Symptom, which is still ongoing in the UK.
It was noted that the application entered the complaints of those who caught Covid-19, and these data were analyzed by scientists.
The research identified the 5 most common Covid-19 symptoms by dividing those who were vaccinated and those who were not.
It was observed that the most common Covid-19 symptoms in those who received the double dose vaccine were headache, runny nose, sneezing, sore throat and loss of smell, respectively.
The 5 most common symptoms in those who received a single dose vaccine were listed as headache, runny nose, sore throat, sneezing and cough.
It was determined that those who were not vaccinated complained of the most common symptoms of headache, sore throat, runny nose, fever and cough.
The research also showed that even a single dose of the vaccine reduces the risk of contracting Covid-19 compared to the unvaccinated.