Israel and Bahrain want eligible residents to take their Covid booster shots — and those who don’t do so risk losing their fully-vaccinated status, and the privileges that come with it.

Israel gives vaccinated persons a “green card” which allows them into restaurants, hotels and other indoor spaces.

A green pass can be granted to people who have been treated for Covid-19.

Israel has shortened the validity period for the green pass as of October 3. According to a government advisoryAfter the person has received their second dose, the pass will be void for six months.

Before a green card can be issued, a third dose must be given. This is usually at least one week following the booster. This pass expires six months following the last dose. To be fully vaccinated, it is not known if additional boosters might be necessary in the future.

Israel saw protests over new policies, with an estimated 2,000,000 people losing their Green Pass. Associated Press reported.

Bahrain different criteria for each of the vaccines offered. Six months from the first dose, most people aged 18 or older will still be eligible to receive a booster shot.

According to data from the Kingdom, 52% of infected people did not receive a booster dose between July 1 and Oct 1. A third dose was administered to 3% of the confirmed cases.

“It’s clear, therefore that booster shots increase immunity.” a government news release said.

— This report was contributed by CNBC’s Berkeley Lovelace Jr. Rich Mendez and Natasha Turak.