The immunity to COVID-19 could disappear in several months

“This job confirms that the response of protective antibodies to people infected with SARS-CoV-2 (...) appears to be dropping at a rate of”, Stephen Griffin, associate professor at Leeds University Medical School in Great Britain, underlined today.

“Developing vaccines should either create a stronger and more stable protection against natural infections, or regularly manage”, the doctor, who was not involved in the study, reports ATS.

If infection gives you levels of antibodies that fall in two to three months, the vaccine will potentially do the same and a single injection may not be enough”, notes Katie Doores, lead author of the study, for the “The Guardian”.

Research by prestige “King's College London”, which has not yet been reviewed by colleagues, has been published on the medrxiv website.

Researchers studied the immune response of more than 90 confirmed cases (including 65 of virological tests) and showed that neutral antibodies, capable of destroying the virus, peak on average about three weeks after symptoms appear, then drop rapidly.

According to blood tests, even individuals with mild symptoms have had an immune response to the virus but generally less than in more serious forms.

Only 16.7% of the subjects still had high levels of neutralised antibodies 65 days after the symptoms emerged.