The best place to start for information on the “Novel Coronavirus” (COVID-19) Information is the State of Ohio Department of Health COVID-19 page. There is also a page for Franklin County Public Health Coronavirus Disease 2019 (COVID-19) page. The CDC has info on its Coronavirus Disease 2019 (COVID-19) page. Also see World Health Organization (WHO) WHO Coronavirus Info.
Columbus City Schools has a page for COVID-19 updates.
The Columbus Dispatch Coronavirus Articles may be viewed without paywall. (They suggest “Please support local journalism by subscribing to The Columbus Dispatch at subscribe.dispatch.com.”) For national info you might also explore The Washington Post Coronavirus info page.
Why are governmental and other organizations doing these things? It’s called “flattening the curve.”