COVID-19 antibodies may linger for at least 7 months, study suggestsCOVID-19 antibodies remained 7 months' post-infection, with some even increasing in levels, according to a follow-up study of 578 healthcare workers at the Hospital Clínic at Barcelona.
The results, which were published today in Nature Communications, also include evidence that exposure to common cold coronaviruses may contribute to some cross protection.The cohort submitted four different blood samples from March to October 2020, which were assessed for Immunoglobulin (Ig) A, IgM, and IgG antibodies to six different SARS-CoV-2 antigens as well as the presence of antibodies against four human coronaviruses (HCoVs).