The Speaker of the Queensland Parliament, Labor MP Curtis Pitt, has asked any staff who had contact with one of three groups of students to self-isolate as a precaution.

One of the two women who returned from Melbourne with COVID-19 infected her sister, 22, who worked at the YMCA Chatswood Hills Outside School Hours Care in Springwood. She may have been contagious while working on July 23 and 24 and health authorities have urged any potential contacts to self-isolate and seek medical advice.

As a precaution, the nearby Chatswood Hills State School was ordered closed on Wednesday afternoon. Some 30 students had already gone on an excursion that day to Parliament House in the Brisbane CBD.

Pitt today acknowledged there was a chance that the woman had come into contact with a school student, and therefore a need for him to take precautions in the parliamentary precinct.

“Any staff that have had direct contact with this school tour have been instructed to take leave, not to attend the precinct and get tested for COVID-19,” Pitt said.

“In addition, last night a certified deep clean took place in the precinct of any area where that tour may have visited including toilets. There are no other school tours this week.

“We have not received any information from Queensland Health that any student on the tour has tested positive. It is only a very remote possibility that any transmission could have taken place.

“However, the Parliamentary Service have taken these steps to ensure the safety of people who work on the precinct and people who visit it.”

Parliamentary sittings, not due to resume until August 11, have been disrupted this year due to the need to avoid unnecessary travel and practice safe distancing.