pfizer-64 Israel says Pfizer vaccine just 64% effective in real world as delta variant continues to spread rapidly Russia and Indonesia set new one-day record death tolls and Indonesia sources oxygen from Singapore. The Israeli health ministry said it now believes the vaccine is just 64% effective at preventing symptomatic infections, which compares with the efficacy rate of about 95% in clinical trials back in 2020, it said in a statement posted on Twitter. The vaccine remains roughly 93% effective at preventing hospitalizations and death, the ministry said. Experts have repeatedly warned of the need to vaccinate at least 70% of the world’s population to prevent new variants emerging that may prove resistant to the existing vaccines.

pfizer-39 Israel says Pfizer Covid vaccine is just 39% effective as delta spreads Pfizer and BioNTech's Covid-19 vaccine is just 39% effective in Israel where the delta variant is the dominant strain, according to a new report from the country's Health Ministry. The two-dose vaccine still works very well in preventing people from getting seriously sick, demonstrating 88% effectiveness against hospitalization and 91% effectiveness against severe illness, according to the Israeli data.