RAPID CITY, Mich. The Torch Lake sandbar has been listed as a possible coronavirus (COVID-19) exposure site after a large number of people gathered there over the Fourth of July weekend. Anyone who visited the potential exposure site last weekend is being asked to monitor themselves for COVID-19 symptoms, which can develop up to 14 days after exposure. To get tested for COVID-19, contact your primary care physician or visit a no-cost testing site in Michigan. How easily the virus spreadsHow easily a virus spreads from person-to-person can vary. Some viruses are highly contagious (spread easily), like measles, while other viruses do not spread as easily.