First two shots don’t protect against infection, boosters do somewhat (60%?).
I’m guessing you mean “first shots obtained in spring or summer are likely to have declined by now”? Or do you mean the third shot gives you more immunity than you ever had with only 2?
I had the same reaction as Elizabeth. The data I’ve seen suggests that the key variable is “time since last dose”. Vaccines protect against severe disease and death very well, possibly for years. But protection against infection specifically appears to peak about a month after your last dose, and drop to (around) zero about six months after your last dose.
Are you sure you’re not confusing a time sequence here, with quantity or quality? Your sentence suggests that there is something “different” about getting a booster (but it’s the same physical entity as the first two doses!). And even now, you say “three is better than a fresh two”. Do you have a reference for that, in particular to distinguish recency from quantity?
To be concrete, I would strongly suspect that, six months after these latest boosters, you AGAIN have very little protection against infection.
I’m guessing you mean “first shots obtained in spring or summer are likely to have declined by now”? Or do you mean the third shot gives you more immunity than you ever had with only 2?
I mean the second one, but ‘new’ two shots is going to do something in between. Three is better than a fresh two.
I had the same reaction as Elizabeth. The data I’ve seen suggests that the key variable is “time since last dose”. Vaccines protect against severe disease and death very well, possibly for years. But protection against infection specifically appears to peak about a month after your last dose, and drop to (around) zero about six months after your last dose.
Are you sure you’re not confusing a time sequence here, with quantity or quality? Your sentence suggests that there is something “different” about getting a booster (but it’s the same physical entity as the first two doses!). And even now, you say “three is better than a fresh two”. Do you have a reference for that, in particular to distinguish recency from quantity?
To be concrete, I would strongly suspect that, six months after these latest boosters, you AGAIN have very little protection against infection.
This chart was from before omicron (Aug 2021), but I’m not aware of any major changes in the data: https://www.medrxiv.org/content/medrxiv/early/2021/08/27/2021.08.25.21262584/F2.large.jpg
(From: https://www.medrxiv.org/content/10.1101/2021.08.25.21262584v1.full )