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Experts from the Johns Hopkins Bloomberg School of Public Health offer science and evidence-based insights on the public health news of the day. The current focus is the novel coronavirus spreading around the world.

May 1, 2020

In March, Johns Hopkins Hospital began making its own COVID-19 tests. The lab now has the capacity to run 600 tests per day, but is limited by shortages in the supply of reagents: the chemicals needed to process the tests. Dr. Karen Carroll, director of the Division of Medical Microbiology at Johns Hopkins Hospital talks with Dr. Josh Sharfstein about what it takes to develop a working COVID-19 test, why labs across the US are struggling with shortages, and what needs to happen to fix access to testing.