"Israel to give Pfizer Covid booster shots to people over 60 as efficacy appears to wane amid delta"
http://www.cnbc.com/2021/07/29/delta-variant-israel-to-give-pfizer-covid-booster-shots-to-elderly-.html
I think they were 2 or 3 months ahead of the world getting vaccinated so this may be a signal we'll need to roll up our sleeves again. |