⚠️NATURAL IMMUNITY versus VACCINES—Which is stronger? Let’s compare reinfection breakthroughs vs vaccine breakthroughs: ➡️Natural immunity is **MUCH weaker than vaccine** protection. By how much? HUGE—Vaccine is 📌9x stronger in May, 📌2x stronger during #DeltaVariant.🧵 #COVID19 pic.twitter.com/g90og2ibUB

— Eric Feigl-Ding (@DrEricDing) September 30, 2021