But does virus stay on bell if one uses ones fingers. Thanks for replies ..
there have been a number of studies to establish how long the novel coronavirus survives on surfaces. It varies a lot, depending on what the surface is, but the time varies from a few hours to around 3 days. Sunlight and weather and temperature also affects it.
https://www.bbc.com/future/article/20200317-covid-19-how-long-does-the-coronavirus-last-on-surfaces
interestingly, hospital doorhandles used to be brass, because brass has anti-bac, anti-viral properties. But in recent years they have discontinued that tradition, and now stainless steel is used, which is one of the surfaces that the virus lives longest on.
so yes, the coronavirus (and all sorts of other bugs and viruses can be transferred on doorhandles, pedestrian crossing buttons, doorbells, handrails, stair rails, etc. etc.
Personally, I have been using my knuckle on doorbells and pedestrian crossing buttons, for
years.