Wiktionary
h1n1
n. (context medicine English) A strain of influenza, the most common cause of flu in humans; also the strain responsible for swine flu.
Wikipedia
H1N1 (band)
H1N1 is an American all-star punk rock group featuring Henry Rollins from the California hardcore punk group Black Flag and Rollins Band, former MC5 guitarist Wayne Kramer and singer-songwriter Paul Collins from The Nerves and The Beat.
The group are currently working in the studio and writing songs for an upcoming album combining elements of punk rock, metal and folk rock.