It’s Memorial Day Weekend and many will spend their time at beaches or pools, which brings up new questions about the spread of coronavirus. How safe is it to swim in a pool, or in a lake or ocean? Could Vitamin D prevent COVID-19 infection? And one Currents News viewer wants to know if smoking could kill the virus. Dr. Robert Tiballi, an infectious disease expert with the Catholic Medical Association, joins Currents News to answer your questions.