After ~6 months they are noticeably less effective, although IIRC it's a drop from like 96% reduction in death rate to 85%. It's gradual too, not instantaneous, again if I'm not misremembering.
This is the reason they're talking about doing booster shots.
Data from Israel is increasingly looking like vaccine effectiveness goes way, way down about 6 months after your second shot for Pfizer/Moderna. Most US seniors got their second shot in March or early April.
What do you mean?
After ~6 months they are noticeably less effective, although IIRC it's a drop from like 96% reduction in death rate to 85%. It's gradual too, not instantaneous, again if I'm not misremembering.
This is the reason they're talking about doing booster shots.
Data from Israel is increasingly looking like vaccine effectiveness goes way, way down about 6 months after your second shot for Pfizer/Moderna. Most US seniors got their second shot in March or early April.