I agree that it would be best if we knew how long it was between vaccinations and being sick.
(The US says "AVERAGE DAILY CASES PER 100K IN LAST 7 DAYS 60.1". In LA County, there are about 110 cases/day/100K)
Israel had 58,766 new cases Jan 7 - 14, about 8400/day, with a population about 9.1M, or about 92 new cases/day/100K.
2M vaccinated over 30 days is 67K per day.
12,400 sick is a daily rate of 413 sick per day, or 20.6/day/100K.
(92-20.6)/92 is about a 75% effectiveness. That's a lot of rough estimating, but the numbers I see don't show a clear case that 50% effectiveness for 1 dose is too high.
(The US says "AVERAGE DAILY CASES PER 100K IN LAST 7 DAYS 60.1". In LA County, there are about 110 cases/day/100K)
Israel had 58,766 new cases Jan 7 - 14, about 8400/day, with a population about 9.1M, or about 92 new cases/day/100K.
2M vaccinated over 30 days is 67K per day.
12,400 sick is a daily rate of 413 sick per day, or 20.6/day/100K.
(92-20.6)/92 is about a 75% effectiveness. That's a lot of rough estimating, but the numbers I see don't show a clear case that 50% effectiveness for 1 dose is too high.