<b>Follow the latest updates on </b><a href="https://www.thenationalnews.com/coronavirus/2021/07/06/coronavirus-latest-abu-dhabi-extends-quarantine-rules/"><b>the Covid-19 pandemic</b></a><b> here</b> Residents of Abu Dhabi who received their second shot of <a href="https://www.thenationalnews.com/uae/health/sinopharm-vaccine-in-uae-how-effective-is-it-against-covid-19-and-are-there-side-effects-1.1175488" target="_blank">Sinopharm’s Covid-19 vaccine</a> more than six months ago must have a booster dose by September 20. People who have received two doses of the <a href="https://www.thenationalnews.com/uae/2021/08/11/al-hosn-updates-how-to-download-vaccination-certificate/" target="_blank">vaccine</a> are considered fully <a href="https://www.thenationalnews.com/uae/2021/08/28/uae-to-open-up-visit-visas-for-all-vaccinated-tourists/" target="_blank">vaccinated</a>, but if the second was not administered within the past six months, they must have a third shot, Abu Dhabi Emergency, Crisis and Disasters Committee said. The booster is required to enhance immunity and there is a 30-day grace period in which to take it, the committee said. From September 20, people who have not had the booster shot will not be able to <a href="https://www.thenationalnews.com/uae/2021/08/19/how-abu-dhabis-new-entry-rules-for-vaccinated-people-will-work/" target="_blank">enter public places</a> that require <a href="https://www.thenationalnews.com/uae/2021/08/26/back-to-school-how-to-check-your-al-hosn-status-if-app-isnt-accessible/" target="_blank">green status on Al Hosn</a>, the UAE’s official Covid-19 app. After the third dose, a PCR test must be taken at least every 30 days to maintain green status on Al Hosn. Residents who have taken the Pfizer-BioNTech vaccine, or any of the other approved vaccines, do not require a third dose at this stage. Booster shots can be taken without prior appointment at any Seha <a href="https://www.thenationalnews.com/coronavirus/2021/07/07/uae-covid-19-vaccine-how-do-i-book-a-booster-shot/">vaccination</a> centre. The Department of Health in Abu Dhabi said <a href="https://www.thenationalnews.com/uae/2021/08/19/how-abu-dhabis-new-entry-rules-for-vaccinated-people-will-work/" target="_blank">Covid-19 vaccines</a> for all other people in the emirate, including children aged 3 and up, could be received at walk-in centres throughout the emirate. Children aged 3 to 17 can take the <a href="https://www.thenationalnews.com/uae/health/2021/08/11/what-are-the-sinopharm-vaccine-side-effects-and-is-a-pfizer-booster-shot-safe/">Sinopharm Covid-19 vaccine</a>. The <a href="https://www.thenationalnews.com/uae/health/2021/08/10/covid-vaccines-in-uae-centres-that-offer-pfizer-shots-and-boosters-in-dubai-and-abu-dhabi/">Pfizer-BioNTech vaccine</a> is also available for those aged 12 and over.