Pfizer Vaccine efficacy drops as Delta variant spreads

The Israeli government says its analysis has shown the Pfizer-BioNTech coronavirus vaccine appears to be less effective against infections caused by the Delta variant compared to other strains of Covid-19.

In a brief statement by the government that as of June 6, the vaccine provided 64% protection against infection.

In May when the Alpha variant dominated in Israel and the Delta strain had not yet spread widely it found that the shot was 95.3% effective against all infections.

The government added that the vaccine was now 93% effective in preventing severe disease and hospitalizations, compared to 97% reported in the medical journal The Lancet in May.