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A study from Britain raises questions about possible permanent immunity after a Covid-19 infection. Antibodies to the new coronavirus have declined rapidly in the British population over the summer, according to a study published Tuesday by Imperial College London. This suggests that protection after infection may not last long.
The scientists looked at the level of antibodies in the UK population after the first wave of infections in the spring. Consequently, the spread of antibodies fell in six percent of the population in late June to just 4.4 percent in September. There were fewer changes in antibody levels among healthcare workers, possibly due to their repeated exposure to the virus.
The vaccine can protect better than natural immunity
In the professional world, rare cases of a second corona infection have already raised questions about immunity to the virus. A study from the Chinese University of Chongqing had already shown that the amount of antibodies in the blood of recovered Covid-19 patients can significantly decrease in two to three months.
Experience with other coronaviruses suggested that immunity may not last long, scientists at Imperial College said. They stressed that the rapid decline in antibodies does not necessarily affect the efficacy of corona vaccine candidates currently in clinical trials. “A good vaccine can be better than natural immunity.” (SDA)
