Pink won’t be playing Detroit’s Little Caesars Arena because she’s battling the flu. (Photo: Bang ShowBiz)

Pink, one of the hardest working singers in show business, is down with the flu and bagging her performance at Little Caesars Arena in Detroit. The move came on doctor’s orders. Her whole family is battling the virus. What, no flu shots?

Pink, real name Alecia Beth Moore, doesn’t turn up on any celebrity list of anti-vacciners, but it was a little odd that daughter Willow also came down with chicken pox in 2013.

“my daughter is my hero. i wish i was as cool as her #chickenpox #sowhat,” the singer wrote at the time on Twitter.

The childhood disease, once a scourge, has been largely eradicated by vaccines. The flu was once a deadly disease as well, causing widespread pandemics that killed tens of thousands worldwide.

The virus still kills. Influenza-like illnesses reported so far this year are now as high as the peak of the swine flu epidemic in 2009, according to the federal Centers for Disease Control (CDC) .

The latest outbreak is expected to rival the 2009 flu and cause as many as 12,000 deaths. Flu vaccines can prevent the illness or ease the symptoms.

But a small percentage of Americans, led by a number of high-profile celebrities, refuse to vaccinate themselves or their children. Medical professionals say their fears are misplaced and cause more harm than good.

Anti-vaxers in California are believe to be behind a resurgence in childhood diseases like chicken pox, measles and mumps.

This is the second concert Pink has cancelled. She also bagged a show in Montreal.

Daughter Willow, 6, and son Jameson, 15 months, are battling the virus. Husband Carey Hart has also stopped racing motocross for the same reason.

In a note posted on Twitter, she wrote:

“I’ve just seen the doctor here again in Montreal. I’m not going to be well enough to do the show tomorrow night in Detroit. I want to give you all the full show and not be hacking all the way through it and have to cut songs because of my voice. I understand how much trouble you go to to be at my shows, what it all entails, the planning, the schedules, etc. I am very very sorry, and I’m very grateful for your understanding.”

In a separate note, she wrote:

“I am absolutely GUTTED to announce that tomorrow’s show, March 23rd (Friday) will be postponed. I will absolutely be back to perform for you all and I’m grateful for you wanting to come and be with us at all. Our entire family have been battling this awful virus/flu for two weeks now, and I have battled my way through these shows because postponing sucks. Carey’s been sent home with the flu while me and the kids battle this virus. I wish anyone out there going through this healing vibes and big hugs.”

The 38-year-old singer played two shows at the Air Canada Centre in Toronto on March 20 and 21, as part of her “Beautiful Trauma World Tour.” It kicked off on March 1.

She is yet to reschedule the Montreal or Detroit shows.

Pink also complained of the flu in February, the day before she was due to sing the National Anthem at the Super Bowl. She performed anyway.