COVID-19 immunity: How long do antibodies last?
COVID-19 patients develop a certain level of immunity after battling the virus, but new studies find it may not last long.
in a non peer reviewed pre print paper from the Imperial College of London. Antibody levels were tracked in 365,000 people in England from June 20th through September 28th, researchers found. In June, 6% of the population had antibodies using a finger prick test. By September, Onley, 4.4% of the people tested had antibodies. This is significant for two reasons. The decrease suggests over just a few months the immunity of the population significantly dropped. It also highlights that over 95% of the population tested had no antibodies, not promising for any level of herd immunity. Now, another study from the journal Nature Microbiology look at the antibody response of 65 people with Cove in 19, they found over 95% of the patients developed an antibody response after eight days from symptom onset. However, the amount of neutralizing antibody produced was highest in patients with the most severe symptoms. Furthermore, people who produced the highest levels of antibodies did continue to produce them for more than two months after their initial infection. But for those who initially produced fewer antibodies, they became undetectable. Within a month and a half