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Evidence and experts to help you understand today’s public health news—and what it means for tomorrow.

May 22, 2020

Is Vitamin D deficiency correlated with severe outcomes? Is it safe to use dry bat guano fertilizer? People in my area seem to be social distancing, so why are there still so many cases? If I received a flu shot, will it help protect me from severe illness with coronavirus?

Dr. Caitlin Rivers of the Johns Hopkins Center for Health Security addresses your questions submitted to