It said the five remaining horses on the affected property on the road joining Woodstock and Giru all seemed to be well and were being checked regularly.

Four horses on neighbouring properties have been tested as a precaution.

The spokesperson said a couple of tests would be conducted throughout the 32-day quarantine period, and a new statement would be released only if there were a positive result.

Officials have warned horse owners to remain vigilant and keep horse feed and water away from under trees.

In response to the case, an information van was set up at the Woodstock service station last week for residents seeking further advice.

To report suspected cases, contact Biosecurity Queensland on 13 25 23 or the Emergency Animal Disease Watch Hotline on 1800 675 888.

For general inquiries about the infection of Hendra virus in humans, call the Queensland Health Hotline on 13 HEALTH (13 43 25 84) or visit the Queensland Health website.

For information about managing Hendra virus risks at workplaces, contact Workplace Health and Safety Queensland on 1300 369 915 or visit the Worksafe website.