Covid natural immunity confirmed

TL;DR

Natural immunity after COVID-19 infection provides at least a 90% protection against severe disease, hospitalization, and death, equal to or better than vaccination.

Transcript

welcome to today's talk friday the 24th of February now we're going to be looking at the most significant study to come out so far looking at natural immunity now this is starting to filter through into some aspects of the popular press not a lot but it's getting through a bit you're still not reading about it on government websites very much but t... Read More

Key Insights

• 😣 Natural immunity after COVID-19 infection is effective and provides strong protection against severe disease, hospitalization, and death.
• ✋ The study confirms that natural immunity is at least as high, if not higher, than the protection provided by two doses of mRNA vaccines.
• 🔡 Reinfection with Omicron is possible, but the cases tend to be milder and the absolute risk is much lower compared to individuals without previous exposure.
• 🗺️ The study suggests that natural immunity is a valuable tool for predicting future disease burden and designing policies for travel and access to venues.
• 🙂 The risk-benefit analysis of vaccination has changed, and governments may consider tapering down the vaccine program in light of the strong natural immunity observed.
• 🛝 The study synthesized data from a large number of studies and countries, providing grounds for optimism and vindicating the belief in the effectiveness of natural immunity.

Questions & Answers

Q: Does natural immunity after COVID-19 infection provide better protection than vaccination?

Yes, the study shows that natural immunity provides at least a 90% protection against severe disease, hospitalization, and death, which is equal to or better than vaccination.

Q: Is there a difference in protection against reinfection with different variants?

Yes, the study found that protection against reinfection with Alpha, Beta, and Delta variants was high, while protection against Omicron reinfection was lower but still significant.

Q: How long does natural immunity after COVID-19 infection last?

The study followed participants for 40 weeks and found that protection against severe disease remained at around 90% for both Alpha, Delta, and Omicron variants.

Q: Does natural immunity stimulate a broader immune response than vaccination?

Yes, natural immunity stimulates a wide spectrum of immune responses, including the production of antibodies and the activation of B and T cells against all components of the virus, unlike vaccines that only target the spike protein.

Summary & Key Takeaways

• Natural immunity after COVID-19 infection is effective and provides a 90% protection against severe disease, hospitalization, and death.

• The study excluded vaccinated individuals but included studies where vaccination was controlled for.

• Protection against reinfection with ancestral strains remains high after 40 weeks, while protection against Omicron reinfection is lower but still significant.