Thread by @AbraarKaran

As #covid19 variants spread— the basics of how the virus transmits, & how to protect ourselves remains largely the same

Unfortunately, these basics/essentials are largely out of reach in many countries; &, this is exactly what many expected would happen.

nytimes.com/2021/03/03/opi…

2/ Some have commented previously on reasons that mRNA vaccines may be preferable to the J&J vaccine esp during non-surges; but at a population level, vaccines with ease of storage & single dose would be preferable in hard to reach groups

blogs.jwatch.org/hiv-id-observa…

3/ The variable of interest here is vaccine efficacy against variants like Delta; two dose mRNA regimens seem to still hold up against this variant (unless there’s newer data I haven’t seen); I still have to take a closer look at J&J & Novavax results against Delta

4/ Have seen results from Public Health England suggesting both Pfizer & AZN have excellent efficacy against Delta variant after two doses, but notably reduced when infected after only dose 1

#covid19
gov.uk/government/new…

5/ Life in many parts of the US seems to have returned to some semblance of the pre-pandemic; this is happening while other countries that don’t have enough access to vaccines are dealing w/ surges, lockdowns, overburdened hospitals & more

cnn.com/2021/06/28/afr…