Do Chinese COVID-19 vaccines work, and which countries will get them? -
Do Chinese COVID-19 vaccines work, and which countries will get them?
Posted 01 Oct 2020 11:44 AM


China is among the world's front-runners in developing Covid-19 vaccines. Its indications that mass production of vaccines is imminent has raised questions about capacity, efficacy and availability.

Out of 300 vaccine candidates around the world, nine are in phase 3 human trials, according to the World Health Organization (WHO). Four of those are being produced in China, by Sinovac Biotech, military-affiliated private firm CanSino Biologics, and state-owned China National Biotec Group (CNBG), which has two different shots in development.Uncertainties remain, but Chinese officials are optimistic that the first batch of Covid-19 vaccines will be ready for the general public as early as November or December.

China approved three inactivated vaccines two by CNBG and another by Sinovac for emergency use in July. Both companies' entry to the mass market is subject to the results of the phase 3 clinical trials.

Although health experts are pressing for transparency as countries race to develop vaccines under political pressure, little has been revealed to the public about the research methodology and trial protocols of the Chinese companies.

China has been administering a domestically produced Covid-19 vaccine candidate to selected groups of workers, including medical staff and border inspection officials, since July. None of those who initially received a dose reported a fever and none had any serious adverse reactions, while preliminary results suggested the protection was effective, according to the NHC.

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