The Who has postponed its 50th anniversary tour indefinitely.

The band is delaying all 50 dates of this fall’s “The Who Hits 50!” North American tour. The Who plans on rescheduling the concerts for next spring, they announced on Friday.

Earlier this month, The Who canceled the first four shows of the tour that was to begin this week after lead singer Roger Daltrey contracted viral meningitis. Daltrey said his doctor recommends immediate and prolonged rest.

“We are very sorry to disappoint our fans in this way,” Daltry said in a statement. “For the last four weeks, I have been in and out of the hospital and have been diagnosed with viral meningitis. I am now on the mend and feeling a lot better, but I am going to need a considerable time to recover. The doctors tell me I will make a complete recovery, but that I should not do any touring this year.”

The Who also canceled shows in their hometown of London at the end of last year after Daltry, 71, contracted a throat infection.

Here’s a full list of postponed dates:

9/14 San Diego, CA at Valley View Casino Center
9/16 Anaheim, CA at Honda Center
9/19 Las Vegas, NV at Colosseum at Caesars Palace
9/21 Los Angeles, CA at STAPLES Center
9/24 Portland, OR at Moda Center
9/27 Seattle, WA at KeyArena at Seattle Center
9/29 Vancouver, BC at Pepsi Live at Rogers Arena
10/1 Calgary, AB at Scotiabank Saddledome
10/3 Edmonton, AB at Rexall Place
10/6 Saskatoon, SK at SaskTel Centre
10/8 Winnipeg, MB at MTS Centre
10/10 Minneapolis, MN at Target Center
10/13 Milwaukee, WI at BMO Harris Bradley Center
10/15 Chicago, IL at United Center
10/17 Detroit, MI at Joe Louis Arena
10/19 Toronto, ON at Air Canada Centre
10/23 Pittsburgh, PA at CONSOL Energy Center
10/25 Newark, NJ at Prudential Center
10/27 New York, NY at Madison Square Garden
10/29 Boston, MA at TD Garden
11/1 Washington, DC at Verizon Center
11/4 Philadelphia, PA at Wells Fargo Center
12/1 Toronto, ON at Air Canada Centre
12/4 Louisville, KY at KFC Yum! Center
12/6 St. Louis, MO at Scottrade Center
12/8 Kansas City, MO at Sprint Center
12/10 Denver, CO at Pepsi Center
12/13 Oakland, CA at Oracle Arena