I would guess it was due to the previous difficulty of transferring injured people when today it is easily done with ambulance/automobile/helicoptor. Also, bac

I would guess it was due to the previous difficulty of transferring injured people when today it is easily done with ambulance/automobile/helicoptor. Also, back then I imagine people would be far more reluctant to see a doctor so the serious cases only that would possibly prevent people from going in. Plus, a doctor can't do X-Rays at your house or use his fancy gear.