In the months since the novel coronavirus rose from a regional crisis to a global threat, drug makers large and small have scrambled to advance their best ideas for thwarting a pandemic.   Some are repurposing old antivirals. Some are mobilizing tried-and-true technologies, and others are pressing forward with futuristic approaches to human medicine.   Here’s a guide to some of the most talked-about efforts to treat or prevent coronavirus infection, with details on the science, history, and timeline for each endeavor.

Image by Michal Jarmoluk from Pixabay

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