There are about 40 people in the Whanganui District Health Board region currently considered close contacts of a Covid-19 case.
A Ministry of Health spokesperson said the 40 Whanganui contacts were registered at its National Contact Tracing Centre.
That number was considered a "live" figure that was constantly being updated.
"We expect the numbers of identified contacts to continue to grow across the coming days," the spokesperson said.
Meanwhile, about 10 staff from the Bayleys Whanganui and Ruapehu have been self-isolating after attending a conference in Auckland where there was a positive case of Covid-19.