Antibodies were detectable 9 months after infection, according to a study. gettyKey FactsOver a span of nine months, researchers from Italy’s University of Padua and Imperial College London tested more than 85% of the 3,000 residents of Vo, Italy, for Covid-19 antibodies. The researchers, writing in Nature Communications, found that 98.8% of people infected in the first wave—around February/March 2020—still showed detectable levels of antibodies nine months on when tested in November. The rate at which antibody levels declined after infection varied depending on what tests the team used, highlighting the difficulties in accurately comparing infection rates around the world. What We Don’t KnowUnderstanding how long immunity to Covid-19 lasts is crucial to public health officials trying to manage the pandemic.

Source: Forbes July 19, 2021 16:07 UTC