Injuries that researchers would score as “serious” or “deadly” if they happened to white Americans became “minor” injuries when Black Africans were the victims. Under their relaxed rubric, clinical trials staff scored “life-threatening” injuries as “not serious.” When they reported them at all, NIAID classified mortalities among its African volunteers as “serious adverse events,” rather than “death.” NIAID’s Ugandan team had entirely neglected to report thousands of adverse events and at least fourteen deaths.

