Final thought for today:

Understandably, talk of waning immunity means lots of chatter about boosters [in rich countries].

There are still dozens of countries with hardly any first and second doses done let alone thirds, and their epidemics are as lethal as they have ever been. pic.twitter.com/r7BAf3Q4tB

— John Burn-Murdoch (@jburnmurdoch) August 23, 2021