The Greymouth SPCA is in a lockdown due to an outbreak of cat flu.
Centre manager Mel Rutherford confirmed this morning the Preston Road centre had been affected by an outbreak of cat flu for about three weeks, but it had been contained.
"We have had some cat flu in the centre, so they're in our isolation unit," Ms Rutherford said.
The infection had probably arrived at the centre through a stray cat which had not been inoculated.
Any new cats arriving at the centre were automatically put into the isolation area for a seven-day quarantine while they were assessed, inoculated and cleared of any infectious diseases.