FoundMyFitness #055 COVID-19 Q&A #2 - Antibody-Dependent Enhancement, Cross-Immunity, Immunity Duration & More
Jun 10, 2020
Delve into the intricacies of COVID-19 immunity with a focus on the duration and strength of responses. Discover how sleep deprivation can weaken immunity and vaccine efficacy. Explore antibody-dependent enhancement and its implications for SARS-CoV-2. Learn about the gut microbiome's role in regulating immune function and how nutrition affects immunity. Lastly, uncover the gender differences in immune responses and the long-term health impacts of the virus.
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Infection Timeline
- The SARS-CoV-2 virus peaks in infectivity 4-5 days after symptom onset.
- Patients may test positive for up to 20 days, but transmission risk decreases significantly after 10 days.
Viral Flare-Ups
- The SARS-CoV-2 virus does not integrate into host DNA like HIV or herpesviruses.
- "Flare-ups" are likely due to testing errors or lingering RNA fragments, not viral reactivation.
Immunity Duration
- Immunity duration varies among viruses; measles provides lifelong protection, while common cold coronaviruses offer only 1-2 years.
- SARS-CoV-2 antibody duration and protective efficacy are still being studied.