Another person has been infected by measles in Queensland.

It is the 18th measles case in the state this year.

In the latest case, the infected person visited Ipswich police station and the Ipswich Courthouse a number of times between September 23 and 27 as well as UFS pharmacy at Booval on September 26.

Public health physician Dr Heidi Carroll says those who have visited these areas should be alert for measles symptoms, particularly if they have not been vaccinated against the potentially deadly disease.

The new case was the eighth in the Ipswich area this year, Dr Carroll said.