Under the public health rules, close contacts of a confirmed case are required to isolate for 14 days.
However one Te Awamutu resident told the Herald there are still people coming and going from at least one house where people who are close contacts should be isolating are.
A source said a woman had been visiting people and to the supermarket just prior to testing positive for Covid.
The Herald also understands people at a Te Awamutu household are refusing to get tested despite having symptoms.
Covid-19 response minister Chris Hipkins said yesterday that the Waikato cluster was a "more difficult to reach part of the community" and a "more difficult group to contact trace group of people".
He refused to go into details about what he meant by those comments, saying he would not reveal people's private details.
The Herald reported earlier this week that some of the Te Awamutu/Kihikihi cluster were drug users and linked to well known methamphetamine houses in the town.
A Waikato DHB spokesperson said they had been able to confirm links for almost all cases to date and that exposure events have been between individuals in private settings and this has been supported by the data the DHB was seeing from its widespread testing.
The DHB would not comment on whether anyone in the current Waikato cluster was refusing to get tested, but said if this was the case then it would try and work with them to understand the reason for this. Those who still refused would then be required to isolate for the full 14 days regardless of whether they were a close or casual contact.
As of yesterday, the Waikato DHB was still investigating five cases which were yet to be epidemiologically linked to the current cluster.