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The Backstreet Boys have cancelled several promotional appearances in New York after member Brian Littrell has been diagnosed with swine flu, the band said in a statement Monday.
The singer and his bandmates, Nick Carter, Howie Dorough and AJ McLean, and touring crew were prescribed Tamiflu as a preventative measure while Littrell, 34, recovers.
The group was scheduled to appear at New York's Hard Rock Café on Monday for the NYC PINKTOBER event. The Backstreet Boys, who are due to release their seventh album, This Is Us, on Tuesday, were also scheduled to perform their new single "Straight Through My Heart" on CBS's The Early Show that same day.
"We were really looking forward to spending time with our closest fans and friends in NYC and take part of PINKTOBER, an unbelievable and important program" Littrell says in a statement. "I hope we can come back soon and do everything we can to help."
No other details about the Backstreet Boys' promotional schedule were available.