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Zac Efron Hospitalized for Severe Illness on Set of Quibi's Killing Zac Efron

The actor has since been released from treatment

Amanda Bell

Update 12/30/19: Zac Efron has now offered an update on his condition and confirmed the reports that he'd been temporarily hospitalized for an illness during production of his new reality-adventure series Killing Zac Efron for Quibi. According to Efron, he recovered from his illness quickly enough to complete his work on the new series.

In an Instagram post shared Sunday evening, Efron wrote, "Very thankful to everyone who has reached out.I did get sick in Papua New Guinea but I bounced back quick and finished an amazing 3 weeks in P.N.G.I'm home for the holidays with my friends and family. Thanks for all the love and concern, see you in 2020!"

Previously 12/29/19: Zac Efron had a close call while filming his new adventure series for Quibi, eerily titled Killing Zac Efron. During production on the upcoming reality show, which features the actor stranded for three weeks on a remote island with a local guide and minimal gear, Efron was reportedly stricken with a serious infection and had to be airlifted to a hospital for treatment.

The Australian Associated Press reported on Sunday that the actor was filming the series in Papua New Guinea but had to be flown out to a hospital in Brisbane, Australia for several days of treatment for an infection. According to The Daily Telegraph, Efron's sudden illness was a type of bacterial infection, possibly typhoid, and required several days of medical care. Efron's condition reportedly became stable enough that he was released from care on Tuesday, Dec. 24. He has since been spotted out and about at a Los Angeles store on Saturday.

Everything We Know About Quibi, the Short-Form Mobile Streaming Service

Killing Zac Efron is one of several celebrity-stacked originals which will debut on Quibi, a new streaming service which will launch on mobile devices on April 6, 2020. Efron stars in and executive produces the series.

In a statement surrounding the November announcement of Killing Zac Efron for Quibi, the actor 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!"

Reps for Efron and Quibi did not immediately respond to TV Guide's requests for comment.

(Disclosure: TV Guide is owned by CBS Interactive, a division of ViacomCBS.)

Zac Efron

Zac Efron

Lev Radin/Pacific Press/LightRocket via Getty Images