This is probably not what Phish had in mind when they wrote their 1994 single, “Down with Disease.”

Self-proclaimed “Phans” of the legendary jam band are singing the blues after being informed that a three-day camping event tied to a weekend of Phish shows in Denver is being canceled over concerns about the pneumonic plague, which seems to have infected a nearby prairie dog population, according to public health officials.

“It was pretty much determined that we needed to not be careless and reckless in a way to keep people out of those areas,” Tri-County environmental health manager Monte Deatrich told the Denver Post.

Last week, the department and the Colorado Department of Public Health reported finding infected fleas and dead prairie dogs around in the dirt lots near the Dick’s Sporting Goods Park in Commerce City.

Although they are taking action to help prevent the spread of disease, they aren’t taking any chances either.

The nearby grass fields, the paved lots and the venue location itself will remain open for the concerts, but an alternative camping site has not been named. Meanwhile, the band also posted a notice of the camping ban on their website on the same day.

But the Phish concerts aren’t canceled. The string of shows, planned for Labor Day weekend, is expected to see some 23,000 in attendance, with 2,000 to 3,000 guests originally planning to camp each night. Camping and RV permits will be automatically refunded to those concertgoers, and free off-site parking and shuttles are being organized to make up for the dirt-covered parking lots, which are now closed, according to the band’s statement.

“They should be safe walking in and out of the venue,” said promoter Don Strasburg, co-president of Denver-based AEG Presents Rocky Mountains. “They should stay out of the areas that are posted. As long as they stay on asphalt and go to the concert, they should have a good time and be safe.”

As Denver officials continue to treat infected areas and post clear warnings, fans traveling from afar say they are disappointed with the timing of the announcement, as the event is now less than two weeks away.

“The [Phish] concert venue and the band and the promoters have been silent about it,” Dan Esterkin, a Phan from Boston, tells the Denver Post. “I don’t know if they were just hoping it would not be a problem by then or what.”

On the news outlet’s messages board, fans continue to lament the decision, including the loss of so-called “Shakedown Street,” a makeshift mall where Phans vend food and souvenirs at many of their shows, which was to take place on a dirt road near Dick’s stadium.

Added Denver Post reader Ben Schroeter, “It’s not just the number of people who camp — that ‘Shakedown’ lot becomes it’s own little city with commerce and all where all the attendees mingle before and after the show. Who’s gunna provide the grilled cheese now? Where will the frosty IPA’s be? This is a travesty!”