They are releasing numbers, the numbers are not as good as they are promising. Take for example the claims that the vaccines prevent 94% of serious Delta cases. Well the UK is actually checking every COVID test for variants and publishes that data to the public.
Technical briefing documents on novel SARS-CoV-2 variants.
www.gov.uk
Looking at publication 15 and 18 we get a range for June 7th to June 28th. Unvaccinated Rate rate during this period was 36.1%. While Double Vaccinated average was 40% during this time period. So normalizing the two different population sizes we get the following.
Calculating overnight hospitalizations during this time period;
Unvaccinated 931 * (40%/36.1%) = 1,032
Vaccinated 271 * (36.1%/40%) = 246
(1,032 - 246) / (1,032) = 76.2% ... Not 94%.
Calculating deaths during this time period;
Unvaccinated 69 * (40%/36.1%) = 76
Vaccinated 106 * (36.1%/40%) = 96
(76 - 96) / (76) = -26.3%
Israel just revised down their 94% effective rate to 64% of the vaccines for Delta cases. With time they are likely going to revise down the effective rate of serious cases. Likely waiting for their 3rd shot program to be completed, and/or a Pfizer Delta specific booster before breaking the news.
The vaccine protected 64% of inoculated people during an outbreak of the Delta variant but was 94% effective at preventing severe illness, according to Israel’s Health Ministry.
www.wsj.com
But science is always right, a 30% decrease is just a rounding error. Nothing is based on politics.