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SARS-CoV-2 Antibodies May Persist Nine Months After Infection


Jul 26, 2021
MONDAY, July 26, 2021 (HealthDay News) Antibody levels appear to remain positive for up to nine months after severe acute respiratory syndrome coronavirus 2 infection, according to a study published online July 19 in
Nature Communications.
Ilaria Dorigatti, Ph.D., from Imperial College London, and colleagues conducted two mass swab testing campaigns in Vo’, Italy, in February and March 2020, and then tested 86 percent of the Vo’ population with three immuno-assays detecting antibodies against the spike and nucleocapsid antigens, a neutralization assay, and polymerase chain reaction (PCR) in May 2020. In November, individuals testing positive to PCR in February/March or to a serological assay in May were tested again. ....

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Covid antibodies persist at least 9 months after infection: Study


INDIA New England News
London– Antibody levels remain high nine months after infection from SARS-CoV-2, the virus that causes Covid-19, whether symptomatic or asymptomatic, researchers have found.
Researchers from the University of Padua (Italy) and the Imperial College London tested more than 85 per cent of the 3,000 residents of Vo’ in Italy, in February/March 2020 for infection with SARS-CoV-2 and tested them again in May and November 2020 for antibodies against the virus.
The team found that 98.8 per cent of people infected in February/March showed detectable levels of antibodies in November, and there was no difference between people who had suffered symptoms of Covid-19 and those that had been symptom-free. The results are published in the journal Nature Communications. ....

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