A measles alert has been issued in Western Australia following multiple exposure sites visited between August 22 and September 16, 2025, where individuals may have been exposed to the highly contagious virus.

Western Australia has reported 39 measles cases this year, mostly in the Perth metro area, with recent cases linked to fly-in, fly-out workers from a Pilbara mine site, and an expected rise as school holidays and travel increase.

Measles spreads through airborne droplets and remains infectious in the air for up to 30 minutes after an infected person leaves, with symptoms typically developing 7 to 18 days post-exposure, including cough, fever, rash, and red eyes.

Higher-risk groups include immunocompromised individuals, young children, pregnant women, and travelers to countries with outbreaks, emphasizing the importance of vaccination and travel precautions.

Health authorities advise travelers to consult GPs for vaccinations before international trips, especially for babies as young as six months, due to the virus's high contagiousness.

Preventive measures focus on ensuring vaccination with two doses of MMR, with free vaccines available for susceptible individuals, and patients are urged to call ahead before visiting healthcare facilities if measles is suspected.

Individuals who visited specific exposure sites during the listed dates, especially those not immune, are advised to monitor for symptoms such as fever, rash, cough, and red eyes, and seek medical advice if symptoms appear.

Health authorities have listed exposure sites including chemists, shopping centers, and cafes, urging visitors during specific times to be vigilant for symptoms and seek medical attention.

Recent exposure at Qantas flights between the Christmas Creek Mine and Perth has raised concerns about transmission among workers.

The detailed list of exposure sites in Victoria Park, Belmont, Midland, and Morley is critical for public health monitoring and response.

Immunity is considered for those who have received two measles vaccines or were born before 1966, while people born after 1965 should verify their vaccination status.

With nearly one-third of Australia's measles cases in 2025 occurring in WA, health officials emphasize vaccination and awareness, especially as travel increases to destinations like Bali facing outbreaks.