Tweet from EricTopol at December 23, 2021 at 08:21AM

Why people with prior Covid, not vaccinated, are vulnerable to Omicron
“the neutralization titers against Omicron were 15.8- and 4.4-fold lower than those against {ancestral strain]”
https://t.co/chqzKK7rWq https://t.co/IQrR8teag9

— Eric Topol (@EricTopol)
Dec 23, 2021

from http://twitter.com/EricTopol