What they say

I strongly suggest the government severely punish those who are responsible for this vaccine scandal and give the public an explanation. I will propose to China's top political advisory body, call on my relatives and friends and exhaust my capability to press for a legal result. The scandal is far more horrendous than those fraudsters faking Adidas or Nike products. Not only are hefty fines needed, but also imprisonment. As an outraged father, I appeal to all parents and prospective parents to take action, and to ask yourself the question: How would you feel if your child was injected with a substandard vaccine?

Liu Qiangdong, founder, chairman and chief executive of e-commerce company JD

Aside from a thorough investigation, experts are expected to offer a remedy - what should we do if problem vaccines were already injected?