Health officials in New South Wales have issued a warning after a Queensland individual with measles visited Sydney while contagious. Among the locations visited was Accor Stadium, where the person attended an Oasis concert.

According to a spokesperson from NSW Health, anyone who was at the concert on Saturday should stay vigilant for any signs of measles until November 28.

Beyond the stadium, the infected individual traveled through Sydney Airport, the central business district, and areas in the inner west, using train services between Saturday and Monday.

NSW Health assured the public that these sites do not currently pose any ongoing risk.

In a related development, Queensland Health released a measles alert after confirming three cases linked to a separate concert at Brisbane Entertainment Centre.

Anyone who attended American singer Jelly Roll’s show on October 24 could have been exposed and is urged to be on the lookout for symptoms.

The three people spent time in the Gold Coast, Brisbane and Wide Bay areas while unknowingly infectious, Queensland Health said.

Health Protection NSW executive director Dr Jeremy McAnulty said measles is a vaccine preventable disease that is spread through the air when someone who is infectious coughs or sneezes.

“It can take up to 18 days for symptoms to appear after an exposure, so it’s important for people who visited these locations to look out for symptoms up until Friday, November 28.

“It’s important for people to stay vigilant if they’ve been exposed, and if they develop symptoms, to please call ahead to their GP or emergency department to ensure they do not spend time in the waiting room with other patients.

“We want to remind the community to make sure they are up to date with their vaccinations.

“This should be a reminder for everyone to check that they are protected against measles, which is highly infectious.

“Anyone born after 1965 needs to ensure they have had two doses of measles vaccine. This is especially important before overseas travel, as measles outbreaks are occurring in several regions of the world at the moment.”