Potential issues with Ad5 Covid-19 vaccines from Russia and China
Some scientists also worry an Ad5-based vaccine could increase chances of contracting HIV
31 August 2020 - 16:35
Toronto/Chicago — High-profile Covid-19 vaccines developed in Russia and China share a potential shortcoming: they are based on a common cold virus that many people have been exposed to, potentially limiting their effectiveness, some experts say.
CanSino Biologics’ vaccine, approved for military use in China, is a modified form of adenovirus type 5, or Ad5. The company is in talks to get emergency approval in several countries before completing large-scale trials, the Wall Street Journal reported last week...
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