Just released @Health_Affairs ... Yale/Harvard study of how well COVID-19 vaccines will work and what will affect this. Solid research with important messages. Hope
@MoH_SriLanka @sudathsamara #COVIDvaccine team will look at it. healthaffairs.org/doi/10.1377/hl…


1. Vaccines are not the same. Must differentiate according to: #1 how well they reduce illness in infected persons; and #2 how much they prevent infection.
*Pfizer vaccine likely 90% good at reducing illness, but only 50% good at preventing infection.
2. Vaccinating most of the population rapidly with a highly effective 1st generation vaccine like Pfizers is not enough to get to zero cases and deaths.
3. Vaccine effectiveness depends critically on how well other interventions are controlling spread. If these are weak, vaccine effectiveness is low, and logically cost-effectiveness too.

We still need to invest in scaling up #PCR capacity to mop up cases after vaccine without lockdowns, and most importantly to maximize cost-effectiveness of a vaccine. If we don't, vaccines could prove to be money down the drain.

• • •

Missing some Tweet in this thread? You can try to force a refresh

Keep Current with Ravi Rannan-Eliya

Ravi Rannan-Eliya Profile picture

Stay in touch and get notified when new unrolls are available from this author!

Read all threads

This Thread may be Removed Anytime!


Twitter may remove this content at anytime! Save it as PDF for later use!

Try unrolling a thread yourself!

how to unroll video
  1. Follow @ThreadReaderApp to mention us!

  2. From a Twitter thread mention us with a keyword "unroll"
@threadreaderapp unroll

Practice here first or read more on our help page!

Did Thread Reader help you today?

Support us! We are indie developers!

This site is made by just two indie developers on a laptop doing marketing, support and development! Read more about the story.

Become a Premium Member ($3/month or $30/year) and get exclusive features!

Become Premium

Too expensive? Make a small donation by buying us coffee ($5) or help with server cost ($10)

Donate via Paypal Become our Patreon

Thank you for your support!

Follow Us on Twitter!