Feb. 16, 2022
Vaccination towards COVID-19 reduces the chance of growing lengthy COVID and improves lengthy COVID signs amongst those that had been unvaccinated when contaminated, in line with a brand new comprehensive review by the U.Okay. Well being Safety Company.
The evaluate consists of knowledge from 15 U.Okay. and worldwide research, with seven research analyzing whether or not COVID-19 vaccination earlier than an infection protects towards growing lengthy COVID and 7 research wanting on the impression of vaccination amongst individuals who already had lengthy COVID. One research examined each.
In six research, those that obtained one or two vaccine doses earlier than coronavirus an infection had been much less more likely to develop signs of lengthy COVID after an infection.
In two research, absolutely vaccinated folks had been much less seemingly than unvaccinated folks to develop medium- or long-term signs akin to fatigue, headache, weak spot within the legs and arms, persistent muscle ache, hair loss, dizziness, shortness of breath, lack of scent or lung scarring.
As well as, three research evaluating lengthy COVID signs earlier than and after vaccination discovered that most individuals reported an enchancment in signs after vaccination, both instantly or over a number of weeks. A couple of circumstances reported a worsening in signs after vaccination.
“There may be additionally proof that unvaccinated folks with lengthy COVID who had been subsequently vaccinated had, on common, decreased lengthy COVID signs, or fewer lengthy COVID signs than those that remained unvaccinated,” the evaluate stated.
Scientists aren’t but positive why vaccination results in an enchancment in signs for some folks, in line with The Guardian. Further analysis is being performed.
“The time period ‘lengthy COVID’ covers a variety of post-COVID situations and so we don’t but absolutely perceive all of the processes concerned,” Deborah Dunn-Walters, chair of the British Society for Immunology’s COVID-19 Taskforce, advised the Science Media Centre.
“The immune system is assumed to play a job in symptom improvement in a big variety of circumstances, seemingly on account of an overreactive and/or barely misdirected immune response through the acute COVID an infection,” she stated.