Ran Balicer leads an expert Covid-19 advisory panel for the Israeli government. Friday he shared some troubling news with the Wall Street Journal:“The entrance of the Delta variant has changed the transmission dynamics,” said Prof. Balicer, who is also the chief innovation officer for Israel’s largest health-management organization, Clalit.

These so-called breakthrough cases — defined as positive Covid-19 test results received at least two weeks after patients receive their final vaccine dose — are broadly expected as the Pfizer vaccine is highly effective but not 100% foolproof, according to Mr. Balicer. Israeli health officials are optimistic that even if the variant does spread, evidence from countries such as the U.K. indicate the vaccine will prevent a large increase in severe illness and hospitalizations that plagued the country’s health system in previous outbreaks. Israel has recorded only five severe cases in the past 10 days, Prof. Balicer said, but whether more will emerge is too early to tell…. Source: Report from Israel: About Half of Adults Infected With Covid-19 Delta Variant Were Fully Inoculated – Slashdot