The DPT vaccine production of the Changchun-based company has been suspended since then. The Wuhan-based company has resumed production after correcting the problems.

 

DPT refers to a combination of vaccines against three infectious diseases: diphtheria, pertussis and tetanus.

 

In March 2018, the Chinese Center for Disease Control and Prevention (CCDCP) issued a plan for replanting DPT vaccines for those children who had used unqualified DPT vaccines.

 

By implementing a national immunization program, China has effectively taken control of the targeted infectious diseases, the CCDCP said Wednesday.

 

According to the CCDCP, China has stopped the spread of indigenous poliomyelitis since 1995 through vaccination. The annual infections of measles in China used to stand at as high as 9 million in the middle of the 20th century, but the number had been reduced to less than 6,000 in 2017. In the 1960s, up to 3 million people were affected with epidemic cerebrospinal meningitis in a single year, and the number dropped to less than 200 in 2017.

 

"The national immunization program has effectively protected the health and life of the children," the CCDCP said.