Feb. 16, 2022
Vaccination in opposition to COVID-19 reduces the danger of growing lengthy COVID and improves lengthy COVID signs amongst those that had been unvaccinated when contaminated, in response to a brand new complete evaluate by the U.Okay. Well being Safety Company.
The evaluate consists of knowledge from 15 U.Okay. and worldwide research, with seven research inspecting whether or not COVID-19 vaccination earlier than an infection protects in opposition to growing lengthy COVID and 7 research trying 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 prone to develop signs of lengthy COVID after an infection.
In two research, absolutely vaccinated individuals had been much less doubtless than unvaccinated individuals to develop medium- or long-term signs equivalent 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 instances reported a worsening in signs after vaccination.
“There’s additionally proof that unvaccinated individuals with lengthy COVID who had been subsequently vaccinated had, on common, diminished 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 individuals, in response to The Guardian. Further analysis is being performed.
“The time period ‘lengthy COVID’ covers a variety of post-COVID circumstances 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 believed to play a task in symptom improvement in a major variety of instances, doubtless because of an overreactive and/or barely misdirected immune response through the acute COVID an infection,” she stated.