No sports
Fewer cars in the road
No pubs open or all day drinking in the park
Not icy
^That must account for a massive amount of normal A&E custom
I used to work in an on-call clinic dealing with patients referred by A&E/OOH services and our workloads usually had a seasonal pattern to them with the sorts of injuries we would see.
Winter/icy weather - lots of elderly patients with injuries related to slipping on ice. Sledging injuries.
Summer - cycling injuries, DIY and gardening injuries.
Weekends and bank holidays - sharp increase in alcohol related accidents and injuries caused by people doing stupid shit while drunk.
School holidays - sharp increase in the number of children with play related injuries.
3.30pm on school days - sudden influx of children who had hurt themselves at school and been given a wet paper towel for it but whose parents now wanted it checked over by a doctor.
Year round was a general parade of injuries relating to car accidents, alcohol, sports and hobbies, kids being kids, and slips, trips, and falls.
No schools, no play parks, no soft plays, no kids clubs/activities means far less of the injuries usually generated by these.
Less cars on the road means less RTAs.
Pubs and clubs closed mean less alcohol related injuries and the people still drinking are doing it privately at home with a limited supply and no one to get into fights or silly situations with.
Cafes and restaurants closing means things like less food poisoning and accidental allergic reactions.
People self-isolating means less germs circulating in general so less people getting sick from various bugs.
Lots of GP surgeries have switched entirely to telephone appointments for the majority of their patients which, for various reasons, is often faster than seeing a patient face to face so less people going to A&E as they couldn't speak to their own GP.
People with chronic conditions are being directed elsewhere. My father has a medical condition and can have episodes that are considered medical emergencies, the usual process would be that he is taken to A&E, stabilised, and then moved off to the relevant ward for assessment and treatment. His consultant contacted him to advise that from now on he has to go directly to the ward, we should ring ahead to tell them we are on our way, and they will do everything there instead. From speaking to friends in similar circumstances, they have been told variations of the same.
And then of course the people who probably shouldn't be in A&E and know they shouldn't are either staying home or swamping the pharmacy.