In the race for a vaccine to end the global COVID-19 pandemic, eight contenders are at the front of the pack. These eight vaccine candidates are undergoing human testing in clinics in China, the United States, Britain and Germany. Behind them are at least 94 others in various stages of development. The Trump administration is pushing to have hundreds of millions of doses of a vaccine available by the end of the year. However, experts say the unprecedented speed risks taking shortcuts on safety, and there’s no guarantee that any of the vaccine candidates will work. “It worries me, actually, that we aren’t going to know key issues about safety and effectiveness if we’re planning on rolling it out that quickly,” said Paul Offit, director of the Vaccine Education Center at Children’s Hospital of Philadelphia. Sorry, but your browser cannot support embedded video of this type, you can download this video to view it offline. Embed Copy Three ways The eight vaccine candidates fall into three categories. One category might be called the classical technique: triggering the patient’s immune system to respond to the virus by injecting a killed version of it. Three separate groups of Chinese researchers are testing… Read full this story
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