Radio traffic is down considerably with the present restrictions on people being out. My county does not encrypt unless necessary and more dispatches I hear are medical or fire. I live near a major airport, it is also much quieter.
Police responses are down because people (including criminals) are staying home. Domestics are up.
EMS responses are down because people are not going to the ER unless it is an emergency (novel idea)
Fire responses are up because people are home and most fires are caused by human error of some sort