January 26, 2021
National Institutes of Health (NIH)
“The immune systems of more than 95% of people who recovered from COVID-19 had durable memories of the virus up to eight months after infection…
The researchers found durable immune responses in the majority of people studied. Antibodies against the spike protein of SARS-CoV-2, which the virus uses to get inside cells, were found in 98% of participants one month after symptom onset...
Virus-specific B cells increased over time. People had more memory B cells six months after symptom onset than at one month afterwards…
Levels of T cells for the virus also remained high after infection. Six months after symptom onset, 92% of participants had CD4+ T cells that recognized the virus.”
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natural immunity