LAS VEGAS, NEVADA - MARCH 28: Touro University Nevada medical students check a box of N95 respirators and surgical masks before conducting medical screenings at a temporary homeless shelter set up in a parking lot at Cashman Center on March 28, 2020 in Las Vegas, Nevada. Catholic Charities of Southern Nevada was closed this week after a homeless man who used their services tested positive for the coronavirus, leaving about 500 people with no overnight shelter. The city of Las Vegas, Clark County and local homeless providers plan to operate the shelter tonight through April 3rd when it is anticipated that the Catholic Charities facility will be back open. The city is also reserving the building spaces at Cashman Center in case of an overflow of hospital patients. The World Health Organization declared the coronavirus (COVID-19) a global pandemic on March 11th. (Photo by Ethan Miller/Getty Images)