Public confidence in Chinese-made vaccines has recovered painfully slowly in the wake of a hepatitis B death scare, prompting authorities to worry that infectious diseases may gain ground and cause an outbreak.
Hepatitis B shots made by a Shenzhen manufacturer had been suspected of causing the deaths of 17 babies within 24 hours after getting vaccinated in December, but health authorities later ruled out the link and cleared Biokangtai Biological Products of blame.
Li Quanle, a vaccination official with the National Health and Family Planning Commission, told The Beijing News that the vaccination rate had gone up very slowly over the past four months amid lingering doubts over safety.
“If the situation continues worsening, there’s a possibility of the outbreak of infectious diseases,” said
A survey by the Chinese Centre for Disease Control and Prevention in January found that the number of hepatitis B vaccinations dropped 30 per cent and other vaccinations had dropped an average of 15 per cent in 10 provinces.
Before that, China’s vaccination ratio since 2006 had been stable at around 98 per cent of the total population, mainly children, required to get inoculations.
The vaccination rate should be more than 90 per cent to ensure that people are shielded from contagious diseases, he said. For some acute contagious diseases like measles, such ratio should be over 95 per cent, according to Li.
“We aim to restore the public’s confidence in [domestically]-made vaccinations and stop the declining trend,” Li said.
The family planning commission and the China Food and Drug Administration were considering establishing a vaccination monitoring system, the newspaper said. It plans to publish data and analysis reports after a certain period of time, it said.
“Such data and reports are expected to be published routinely to the public withthis year,” said Li.
The 17 infants in the hepatitis-B vaccine scandal died between December 13 and 19. Health authorities swiftly banned Biokangtai’s drugs after the deaths in Sichuan, Guangdong and Hunan provinces.
In January, the World Health Organisation’s China unit said in a statement that there was “no evidence that the quality of the vaccine has caused these ... events”.
Health authorities said many other cases reported by parents in the wake of the deaths were not related to the vaccination, the newspaper report said. Experts ruled out nine of 13 cases as being caused by Biokangtai’s medicine. The remaining cases did not appear tied to the vaccination.
The causes of death varied in all cases, from severe pneumonia, kidney failure, infant diarrhoea and congenital heart disease – the top causes of child mortality on the mainland.