Recent studies have found COVID-19 patient those who have recovered can be ‘immune’ re-infection for at least 9 months. This is regardless of whether a person has symptoms or not.
Quoted from the page The National News, Researchers from the University of Padua and Imperial College London tested how long the antibodies could last against almost all residents in the Italian city.
More than 85 percent of the 3,000 residents of the Italian city of Vo’ were tested in February and March 2020 for COVID-19 infection, then tested again in May and November 2020 for antibodies to the virus.
The study found that 98.8 percent of people infected with COVID-19 showed antibody levels persisted up to nine months later. There is no difference between people with COVID-19 symptoms and those without symptoms.
Previous studies have found that immunity lasts about six months, meaning you can get infected with COVID a second time. Meanwhile, vaccination reduces the chances of getting infected and relieves symptoms but does not always prevent exposure to COVID-19.
“We found no evidence that antibody levels between symptomatic and asymptomatic infections differed significantly, suggesting that the strength of the immune response is independent of symptoms and the severity of infection,” said lead author Ilaria Dorigatti, of the MRC Center for Global. Infectious Disease Analysis in Imperial.
“However, our study shows that antibody levels vary, sometimes very markedly, depending on the test used. This means that caution is needed when comparing estimates of infection rates in populations obtained in different parts of the world with different tests and at different times. ,” he added.
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