Shimla, April 7 - A 55-year-old woman, who tested positive for swine flu, died in Shimla Saturday, the first death in Himachal Pradesh this year, a health official said.

"The victim, a resident of Sarkaghat town in Mandi district, died in the Indira Gandhi Medical College and Hospital in Shimla. She had tested positive Wednesday," state surveillance officer Omesh Bharti told IANS.

He said the woman was in the hospital for the past five days. She was admitted here with high fever and chest congestion.

Bharti said the state surveillance unit has already sounded an alert in the state in the wake of the swine flu death.

He said it was the only swine flu case detected in the state so far this year.

"We sent a team of doctors to the victim's hometown soon after she tested positive and her family was given prophylactic treatment," added Bharti.