West Australians are being warned about an increased risk of measles after another person was found to have contracted the virus while travelling overseas.

It is the second such case in a week, after a passenger on board a flight from Tokyo to Perth, via Singapore, was diagnosed with the infection several days ago.

The locations the second person visited are listed below but include the Bentley Maternity Unit.

The Health Department’s director of communicable diseases Paul Armstrong said in both cases, public health staff had been contacting potentially exposed individuals directly, but it was not possible to identify and specifically warn people who were in public places.

“Measles is contagious for about four days before and after the development of a rash,” Dr Armstrong said.

“Children and adults who have been unwittingly exposed are at risk of developing measles if they are not immune.

“A person is considered immune to measles if they have previously received two doses of a measles vaccine or were born before 1966.”

Dr Armstrong said anyone who developed a fever with other symptoms, including cough, runny nose, sore eyes and a rash, within two weeks of potential exposure to someone with measles should stay home and consult their doctor.

Measles is a serious and highly contagious viral illness spread by tiny droplets released when people cough and sneeze.

Naturally occurring measles has been eliminated from WA for about 20 years.

Below is a Health Department provided list of the locations the second person diagnosed with measles visited in recent days.

This post originally appeared on News.

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