Tweet from AshishKJha46 at January 04, 2023 at 06:45AM

Good morning

Over the holidays, you may have heard about Omicron XBB.1.5

It went from 4% of sequences to 40% in just a few weeks

That’s a stunning increase

So what does it mean? Will it cause a wave of serious illness and death?

Here’s what we know, don’t know

🧵

— Ashish K. Jha, MD, MPH (@AshishKJha46)
Jan 4, 2023

from http://twitter.com/AshishKJha46