are there candidate interventions that only require mobile equipment and not (semi-)permanent changes to buildings?
Fortunately, yes. Within-room UVC (upper-room 254nm and lower-room 222nm) can be provided by mobile lights on tripod stands.
This is what the JHU Center for Health Security did for their IAQ conference last month. (Pictures at https://​​twitter.com/​​DrNikkiTeran/​​status/​​1567864920087138304 )
Fortunately, yes. Within-room UVC (upper-room 254nm and lower-room 222nm) can be provided by mobile lights on tripod stands.
This is what the JHU Center for Health Security did for their IAQ conference last month. (Pictures at https://​​twitter.com/​​DrNikkiTeran/​​status/​​1567864920087138304 )