Regional gap in vaccinations expected to close By WANG XIAOYU | CHINA DAILY | Updated: 2021-05-26 07:17 Share Immunization plan that prioritizes large cities, port areas reasonable, expert says Health experts have expressed confidence in narrowing the regional disparity in China's mass vaccination campaign. A woman receives a dose of COVID-19 vaccine at a vaccination site in Shushan District of Hefei, East China's Anhui province, May 15, 2021. [Photo/Xinhua] However, they also warned that a lack of awareness in some areas about the severity of the virus could hinder progress toward herd immunity, which is expected to be achieved by the end of this year.