Many diseases and conditions are spread by not washing hands with soap and clean, running water. If clean, running water is not accessible, as is common in many parts of the world, use soap and available water.
Riverdale covers about three square miles in area. It has one of the highest elevations in New York City, affording it views of the Empire State Building, George Washington Bridge, Hudson River and New Jersey Palisades.
In the pilot of the 2017 series Riverdale, the town is described as being located in Rockland County. Only one county in the US has that name, Rockland County, New York, close to Archie Comics' headquarters in Pelham, New York.