A new study of Covid-19 infections found that vaccines not only reduce the risk of serious illness and hospitalization, but can also reduce the chances of having long-term Covid-19 symptoms.
"We found that the chances of having symptoms for 28 days or more after infection after vaccination were approximately halved after two doses of the vaccine. This result suggests that the risk of long-term Covid is reduced in individuals who have received dual vaccination." wrote in the study published Wednesday in The Lancet Infectious Diseases magazine.
The researchers, from institutions in the United States and the United Kingdom, analyzed self-reported data from people who shared each symptom of Covid-19 using a cell phone app called Studying Covid Symptoms. The researchers looked at those self-reported symptoms from users who said they had received a Covid-19 vaccine between December 8, 2020 and July 4, 2021- and compared the symptoms of those vaccinated with those who had not been vaccinated.
The data included more than 1.2 million people who reported receiving the first dose of the vaccine, and among them, 0.5%, or 6030, tested positive for severe infection after receiving the first dose. Among the nearly 1 million adults who reported receiving a second dose of the vaccine, only 0.2% or 2370 tested positive after completing both doses.
Overall, the researchers found that vaccination was associated with less symptom reporting in all age groups and many people vaccinated were completely asymptomatic.
Source: CNN
