The fifth case of measles has been confirmed in the Brisbane region, with the latest person spending time in the Fortitude Valley nightclub area during Easter weekend.

The affected person's movements included visiting the Fortitude Valley entertainment precinct for four hours from 11pm, Saturday March 31.

Public Health physician Dr Bhakti Vasant says anyone who may have come into contact with an infectious person, and are uncertain of their immunity to measles should speak to their GP immediately.