Prognosis
New China Vaccine Shows 82% Effectiveness Against Serious Covid
- Vaccine developed by Zhifei is 93% effective against Alpha
- Results help bolster the race for global virus protection
Photographer: Lam Yik/Bloomberg
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A vaccine from China’s Chongqing Zhifei Biological Products Co. showed 82% effectiveness against serious Covid-19 infections, boosting the country’s efforts to immunize its vast population.
In late-stage clinical trials, the vaccine -- dubbed ZF2001 -- has been shown as 92.93% effective against the alpha variant and almost 78% against the more-infectious delta version, the company said in an exchange filing Friday. It did not say if those two figures were just for serious illness or all symptomatic infections including mild cases.