16) Also we have long known vaccinated transmit. Singapore Delta outbreak proves that vaccinated still transmitted. In this #DeltaVariant cluster, among 29 vaccinated who got infected, 21 events were between vaccinated-to-vaccinated or unvaccinated—a lot! https://t.co/qZmCePprsf pic.twitter.com/pmfH5r66Wd

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