BEIJING, Sept. 7 (Xinhua) -- A Chinese health official said Tuesday that the vaccine to be used in an upcoming national measles-elimination campaign is safe and second-time inoculations of children will cause no adverse effect for those who have receive the vaccine.
Liang Xiaofeng, director of the National Immunization Program under the Chinese Center for Disease Control and Prevention, said during an online interview that China's vaccine formula has been used for over 40 years and has been proven "safe and effective."
Liang's remarks were in response to some parents' concerns about whether the quality of the vaccines could be guaranteed and whether the medical staff is qualified to administer the injections.
China is to provide measles vaccinations for hundreds of millions of children nationwide from September 11 to 20 in a bid to eliminate the disease, a leading cause of death among children.
The upcoming vaccination will focus on children ages 8 months to 4 years.
However, those to receive the vaccines will be expanded to 14-year-olds in populous regions such as Beijing, Heilongjiang, Shanghai, Henan, Guangxi. In Jilin, Hainan and Qinghai, children as old as 6 years will also be vaccinated.
The national measles inoculation will consolidate the effectiveness of previous injections and second-time inoculations will not increase the chance of side effects, Liang said.
This campaign will further protect vaccine candidates, cut the spread of the disease and offers a chance for children not yet vaccinated and those children whose first injection didn't fully protect them against the disease, he said.