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Israel got vaccinated very early, and they have something like 85% vaccine coverage. They have a ton of delta cases but hardly any hospitalizations and deaths. The vaccine is working on that.
But the longer you go from vaccination time, the less antibodies you have, which means you can still catch it. But then your memory T and B cells kick in and you don't get very sick or sick at all. Or at least that's the theory. Also why they're looking at boosters after 6 months.
Also Israel's cases already seem to have peaked and are on the way down. Same with UK. Delta seems to burn through its available tinder very fast.
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