Flu vaccine lowers risk of severe coronavirus, scientists
Experts studied the data of more than 74.7 thousand patients from the USA, Great Britain, Italy, Germany, Israel and Singapore.
The influenza vaccine reduces the risk of severe COVID-19, the authors of the study said.It is noted that the researchers analyzed electronic medical records of more than 74.7 thousand patients from the USA, Great Britain, Italy, Germany, Israel and Singapore who tested positive for coronavirus.
The researchers found that those who received the flu vaccine in the previous six months were less likely to have health complications associated with COVID-19 infection.
At the same time, those who were not vaccinated against influenza were 20% more likely to end up in the intensive care unit and 58% more likely to go to the emergency room.
In addition, patients without a vaccine had a 45% more & nbsp; high likelihood of developing sepsis , 58% more & nbsp; risked a stroke and they were 40% more likely to develop deep vein thrombosis.
It is indicated that researchers found no connection between getting a flu shot and a lower likelihood of dying from COVID- 19.
The new study is consistent with several previous studies that have already reported a link between mild COVID-19 and flu shots.
The authors, however, noted that these findings do not necessarily indicate that a vaccine against influenza protects against the new coronavirus.
It is possible that the flu shot boosts immunity. Plus, people who choose to get the flu shot tend to be generally healthier than people who skip it, which means they're already at a lower risk of COVID-19 complications.
Experts recalled that the flu vaccine changes every season, so it is unclear if the vaccine developed for the 2020-2021 period will have the same association with the less severe course of the coronavirus as the 2019-2020 vaccine.
Pay attention also to the peculiarity of electronic health records, which is that different countries may report symptoms differently and use different tests to confirm the diagnosis of SARS-CoV-2, which can distort the data.