Thread by @DrEricDing

Preliminary report of #Omicron says Omicron is 1.3x more transmissible than Delta, & unvaccinated have 2.4x greater risk of severe. Those with BOOSTERS: 90% lower risk of severe outcome. But it’s only early ➡️main worry is if 2 doses enough—data is coming.
jpost.com/health-and-wel…

2) there are potentially data on Omicron and vaccines out there for 2 shots. But it hasn’t been shared yet… 👇 vote in the poll.

https://twitter.com/drericding/status/1465596102367924226

3) this 90% was just for 3 shots & severe. Things we still need to know:

📌Case mix of elderly / sick / immunocompromised?

📌3 dose efficacy for infection?

📌2 dose efficacy for hospitalization?

📌2 dose efficacy for infection?

📌2 dose efficacy by duration since 2nd shot?

4) Another model on #Omicron transmission speed by @JPWeiland estimates Omicron to be 4.5x higher than Delta. His model assumes no mitigation change prior to the #B11529 announcement, and the relative rise after Omicron emergence.

https://twitter.com/jpweiland/status/1465826265403994119

5) the doubling time of #COVID19 cases in SA is 3-4 days, says Dr @GosiaGasperoPhD — who accurately modeled Canadian transmission months ago.

https://twitter.com/DrEricDing/status/1465601105518288897

6) And yes, hospitalizations are up in the Omicron epicenter area.

https://twitter.com/DrEricDing/status/1465788414326976518

7) The SA National Institute for Communicable Diseases (@nicd_sa) says 87% of patients admitted to hospital in Tshwane are not vaccinated against Covid-19. The NICD says unvaccinated people are more likely to die from the disease. 

news24.com/news24/southaf…