Quang Ninh: Over 18,000 people received the 4th dose of Covid-19 vaccine On June 8, some cities and districts including Ha Long, Ba Che, Dam Ha, Dong Trieu, Cam Pha and Quang Yen started to administer the 4th dose of Covid-19 vaccine to more than 18,000 residents. 15:31 | 09/06/2022
