Israel – Pfizer Real-World Epidemiological Evidence Collaboration Agreement

2.1 Objective of the Project

To measure and analyze epidemiological data arising from the Product rollout, to determine whether herd immunity is achieved after reaching a certain percentage of vaccination coverage in Israel.

Biden Covid team sees vaccine efficacy waning in unpublished data from Israel

The Israel data, which is set to be made public as soon as this week, shows that the Pfizer vaccine’s ability to prevent severe disease and hospitalization is waning over time — as is the shot’s protection against mild and moderate disease, the two sources said.

[Preprint] Comparing SARS-CoV-2 natural immunity to vaccine-induced immunity: reinfections versus breakthrough infections

SARS-CoV-2-naïve vaccines had a 13.06-fold (95% CI, 8.08 to 21.11) increased risk for breakthrough infection with the Delta variant compared to those previously infected, when the first event (infection or vaccination) occurred during January and February of 2021.

Virus czar calls to begin readying for eventual 4th vaccine dose

Israel’s national coronavirus czar on Saturday called for the country to begin making preparations to eventually administer fourth doses of the coronavirus vaccine. […] This is our life from now on, in waves,” he said.