Zac Efron has been rushed to hospital after being struck down with an infection.

The "Greatest Showman" star was filming "Killing Zac Efron" in Papua New Guinea when he contracted a "form of ­typhoid or similar bacterial ­infection".

Zac had to be rushed to hospital in Brisbane, Australia, in what was called a "life-or-death flight" to be treated by medical experts. The actor was then admitted to the private St Andrews War Memorial Hospital "in a stable condition".

After receiving treatment for a number of days, Zac was given the all clear to fly back to his home in the United States, Australia's The Sunday Telegraph reports.

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Dr Glenn McKay, Director of Medical Rescue, was unable to comment specifically but did confirm that his team "retrieved a US citizen in his 30s from PNG to Brisbane for medical attention in Australia".

The new show will follow the 32-year-old actor as he heads to the jungle on a remote island for 21 days and will be "off the grid" with nothing but basic gear and a guide partner.

Zac said: "I tend to thrive under extreme circumstances and seek out opportunities that challenge me on every level. I am excited to explore any uncharted territory and discover what unexpected adventure awaits!"

The show is set to air on short-form mobile video platform Quibi, which launches in April, and will also include a horror series from Spielberg called 'Spielberg's After Dark' and reality courtroom show 'Chrissy's Court' with Chrissy Teigen.

Zac has previous experience in the wild as in 2014, he appeared as a guest on 'Running Wild with Bear Grylls,' where the two jumped out of a helicopter, trudged over rough terrain in the Catskills, and ate an earthworm.

He will also executive produce the new series with Zero Point Zero and Ninjas Runnin' Wild.