Larissa MacFarquhar on a Potentially Deadly Experiment, and Jelani Cobb on the Killing of Ahmaud Arbery

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Abie Roehrig, a twenty-year-old undergraduate, has put his name on a list of volunteers for a human-challenge trial to test the efficacy of a COVID-19 vaccine. A human-challenge trial for a vaccine would be nearly unprecedented: it would entail giving subjects a candidate vaccine against the virus, and then infecting them deliberately to test its efficacy more quickly than a traditional, safer vaccine trial. Larissa MacFarquhar talks about this highly controversial proposal with the epidemiologist Marc Lipsitch, who supports such trials for COVID-19, and the virologist Angela Rasmussen, who feels that the scientific benefits are too limited to justify the enormous risks. Plus, Jelani Cobb…