Protective Immunity Against COVID-19 May Last For Over 8 Months: Study Protective Immunity Against COVID-19 May Last For Over 8 Months: Study The researchers measured antibodies, memory B cells, helper T cells and killer T cells all four components of immune memory at the same time.
The findings suggest that nearly all survivors have the immune cells necessary to fight re-infection.
COVID-19 survivors may have protective immunity against serious disease from the SARS-CoV-2 virus for months, or even years after the infection, a study suggests.
The findings, based on analyses of blood samples from 188 COVID-19 patients, suggest that nearly all survivors of the disease have the immune cells necessary to fight re-infection.
The Conversation | Guía para desmentir 24 bulos sobre la vacuna del covid-19
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Guía para desmentir 24 falsedades sobre la vacuna de covid-19
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In a US study published today in
Science, researchers detected immune memory to SARS-CoV-2 across all immune cell types studied for as long as 8 months after patients became ill with COVID-19.
In the study, a team led by researchers from the La Jolla Institute for Immunology in California analyzed levels of antibodies and other cells involved in immune response to the novel coronavirus in 254 specimens from 188 recovered adult COVID-19 patients, including 43 samples taken 6 months or more after infection.
Recruited from sites across the United States, study participants had a range of COVID-19 illness severity, from asymptomatic to severe, although most had mild cases. Of all participants, 93% were never hospitalized; of the 7% who were hospitalized, some required intensive care.
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