The study recently published in the Nature Communications, shows evidence that infected people who exhibited milder symptoms developed less of an immunity to COVID-19 than those who got sicker from the disease.
The group behind the study found evidence that suggests there’s a particular threshold of antibodies that could provide immunity, though they wrote that “the precise levels […] associated with protection from reinfection remain unclear.”
In April 2020,SpaceX employees were asked by email to be a part of the study.The employees who signed up gave monthly blood samples.
The paper’s authors note that 92 percent of the volunteers were male, and the median age was 31, which could skew the results. The full paper and dataset are available for free on Nature’s website.