If what I’ve read is to be believed, Lassa spreads through exposure to the body fluids of an infected person or food/household items contaminated with the urine or faeces of infected rats. Unlike SARS‑CoV‑2, it is not known to transmit through airborne particles. I hope I’m correct in thinking that there should be very little risk to us here in the UK.
Tracie Dudley Craig ● 1288d