Feb. 16, 2022
Vaccination towards COVID-19 reduces the chance of creating lengthy COVID and improves lengthy COVID signs amongst those that had been unvaccinated when contaminated, in accordance with a brand new comprehensive review by the U.Ok. Well being Safety Company.
The evaluation consists of information from 15 U.Ok. and worldwide research, with seven research analyzing whether or not COVID-19 vaccination earlier than an infection protects towards creating lengthy COVID and 7 research trying on the influence 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, totally vaccinated folks had been much less probably 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 odor 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 number of instances 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, lowered lengthy COVID signs, or fewer lengthy COVID signs than those that remained unvaccinated,” the evaluation stated.
Scientists aren’t but certain why vaccination results in an enchancment in signs for some folks, in accordance 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 totally perceive all of the processes concerned,” Deborah Dunn-Walters, chair of the British Society for Immunology’s COVID-19 Taskforce, informed the Science Media Centre.
“The immune system is assumed to play a task in symptom improvement in a major variety of instances, probably on account of an overreactive and/or barely misdirected immune response throughout the acute COVID an infection,” she stated.