London
A study released Wednesday in the revista The Lancet reveals that reinfecciones because of covid-19 are “rare”, although they are “more common” in people over 65 years of age, who have only 47% protection against a second infection, compared to 80% of younger subjects.
In the first large-scale investigation into this issue, experts from the Instituto Statens Serum (Denmark) found that most people who have already contracted coronavirus are protected against a new infection for at least six months.
The analysis assessed the re-infection rates detected in Denmark in 2020 and focused exclusively on tribe original of virus, and not in the new variants that emerged later.
This evaluation confirmed that a small proportion of people (0.65%) tested positive.t PCR twice.
Have had a previous infection by the virus it provided about 80% protection against reinfection for people under 65, while it offered only 47% protection for people that age and older.
They found no evidence that protection against reinfection decreased over a six-month follow-up period.
The findings underscore the importance of taking measures to protect the elderly, such as enforcing norms of social detachment and prioritizing the elderly in vaccinations.
The analysis also suggests that even citizens who use the virus they must be vaccinated.
“(The study) gives us another piece among many others in our understanding of the puzzle COVID-19 as a disease, “the paper’s author, Steen Ethelberg, told EFE, emphasizing that the findings also” reinforce the importance of vaccination among older people in our societies, even if they have been previously infected. “
“Vaccinating the vulnerable and, in the longer term, the majority of the population certainly seems like the best way forward,” he concluded.
The data was obtained from the testing strategy of COVID-19 applied in Denmark, for which more than two-thirds of the population – 69% or 4 million people – were tested in 2020.
Specifically, of those who had COVID-19 in the first wave – between March and May 2020 – only 0.65% retested positive in the second outbreak – September to December 2020-.
At 3.3%, the rate is of infection was five times higher among those who tested positive during the second hello previously tested negative.
Of those under 65 taking the disease on the first wave, 0.60% tested positive again in the second, and among those who did not suffer from it, the rate was 3.60%.
Elderly people were at higher risk reinfection, and 0.88% of those infected in the first wave retested positive in the second. EFE