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'Huge hole' in testing data blurs racial, ethnic disparities.

From COVID-19 test sites in low-income neighborhoods with high proportions of racial and ethnic minorities, the view of the pandemic is dire. But to understand which neighborhoods and communities face raging outbreaks and why, researchers need more thorough demographic information, including race and ethnicity, on who gets tested and who tests positive. Even as the U.S. testing infrastructure improves, testing remains sparse in many low-income and minority neighborhoods, and race and ethnicity information is missing for about half of reported COVID-19 cases nationwide. A new federal guidance may fill some of those gaps by requiring laboratories to report race and ethnicity, along with age, sex, and ZIP code, to the government. In the meantime, researchers are combining existing data sets to bring COVID-199s disparities into clearer view.