Cattle on a farm in Pahiatua in the Tararua district, believed to have had a connection with a Hawke's Bay property, are the latest to test positive for the disease Mycoplasma Bovis.
MP for Wairarapa Alastair Scott said he was deeply concerned after the disease was confirmed last week.
"I've been informed that testing on a farm near Pahiatua was undertaken after National Animal and Identification Tracing (NAIT) records showed a connection with an infected property in Hawke's Bay.
'People working between properties need to clean their boots and farm equipment.'
"Farmers across the region need to know this type of information so that they can take proactive measures to protect their animals. The MPI response to date has been feeble. It is not good enough," Mr Scott said.