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Research suggests protective effect of natural infection or vaccination is likely to be persistent.
We got COVID-19 vaccines in record time. Why are HIV vaccines taking so long?
While the United States is getting closer to this point, most health experts caution, it still has ground to cover.
Natural immunity and vaccine responses may be weaker in people with immune suppression, so they should get their second dose promptly.
More than 95% of people who recovered from COVID-19 had durable immune system memory up to eight months after infection.
Another vaccine, from Novavax, was 89% effective in a U.K. trial, but both were less potent against the South African coronavirus mutation.
Long-lived memory immune cells continue to provide protection even after antibody levels drop.
Ask POZ is an ongoing section on POZ.com dedicated to answering general wellness questions.
People who have had evidence of a prior infection appear to have some degree of protection against being reinfected with the virus.
Immune cells called T cells helped prevent reinfection and may be especially important if antibody levels are low or decline over time.
Screening patients for autoantibodies against interferons could help predict which patients are more likely to become very sick.
Doctors and health officials share advice on how to handle Thanksgiving during the pandemic.
Different types of white blood cells provide protection against infections and cancer.
Herd immunity occurs when enough people are immune to a disease that it is unlikely to spread within a population.
Existing T cells may help account for the wide range COVID-19 symptoms.
Antibody analysis may provide guidance for developing vaccines and antibodies as treatments for COVID-19.
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