The health Minister says he's concerned people aren't wearing masks on public transport.
Mandatory mask wearing on buses and trains was removed at the end of February, but wearing a face covering is still advised.
Last week, Stephen Donnelly said compulsory mask wearing could be reintroduced, if a Covid variant of concern emerges during the winter.
Minister Donnelly says he's planning a new campaign to encourage more commuters to wear masks again:
"That is something that is a concern for me. One of the things we're doing is putting a new communications campaign together for example what I would like to see for all of us when we get on a bus or we get on we get on a train is very clear signage on the buses on the train saying you know, if you're reading this sign you should be wearing a mask."
