The big question on COVID 19 is about the nature and durability of the antibodies against the virus that people develop after infection. Previous reports have suggested that anti-COVID19 antibodies sharply decline following recovery from the clinical symptoms of the disease. A new study was conducted by scientist in Iceland and published September 1 in […]
Preliminary data suggest that survivors of SARS-CoV-2 infection may be susceptible to reinfection within weeks or months. One study in ~1,500 COVID patients show that 10 percent % of these patients had undetectable antibody levels within weeks of first symptoms or lost their antibodies two to three months after recovering from the infection. Early works […]
Whether people develop immunity to COVID19 after being infected once is a pressing question. It’s of particular interest to several research developing plasma therapies, whereby antibody-containing blood plasma is extracted from recovered patients and administered to patients to help them fight off the infection. In rhesus macaques, a longitudinal tracking of re-exposure after the disappeared […]