Ignoring it? My friend was ill for 7 days with Covid, still testing positive. She had jury service the following week but when she phoned to postpone they said that she should attend unless she has a temperature. Seems wrong to me, especially in the court environment.
Our court in Oxford doesnt have any windows, the Jury waiting room had fixed non opening windows and the Jury room had fixed closed windows. All had air conditioning though, which I guess means that the virus would be pumped around.