An Israeli healthcare provider that has vaccinated half a million people with both doses of the Pfizer vaccine says that only 544 people — or 0.1% — have been subsequently diagnosed with the coronavirus, there have been four severe cases, and no people have died.

That means the effectiveness rate stands at 93 percent, Maccabi Healthcare Services announced on Thursday, after comparing its immunized members to a “diverse” control group of unvaccinated members.

Full protection for people who have been vaccinated is believed to kick in a week after the second shot, so the Maccabi data covers all those of its members who are seven or more days after receiving that second dose.