One more person has died of swine flu in Ho Chi Minh City, the second fatality in the city this year.
Cho Ray Hospital said Ly Kim Sen, 61, of Dong Thap Province in the Mekong Delta was admitted to the hospital last Saturday, and he tested positive for H1N1.
He succumbed to severe respiratory problems and heart failure Monday afternoon.
A week before being admitted, Sen had symptoms like coughing, fever, and sore throat and took cold medicines by himself.
He had eaten well-cooked duck meat but not slaughtered the animal himself, Lao Dong (Labor) newspaper reported Tuesday.
But no one else in his family developed symptoms of influenza despite also eating the duck meat.
Sen's symptoms improved but then he developed breathing problems and was rushed to Dong Thap General Hospital before being sent to Cho Ray the same day with pneumonia and respiratory problems.
Cho Ray is also treating for H1N1 a 24-year-old woman who has problems with her lungs, severe respiratory problems, and high risk of fatality. The woman from HCMC's District 9 was admitted Sunday.
Tuoi Tre (Youth) newspaper quoted her as saying that she recently ate well-cooked chicken porridge.
A 72-year-old man from the city's District 11, identified only as N.H.C., died of the disease on May 3, a day after he was admitted to the 7A Military Hospital.
He had reportedly returned home with a cough, high fever, chest pain, and breathing problems after a two-day trip to a forest. The source of infection is not known.
Two men aged 23 and 46 in the northern moutainous province of Yen Bai and a 12-year-old girl in the north-central province of Thanh Hoa had died of swine flu in April.
The northern province of Ha Giang confirmed its first H1N1 death this year on May 21, a week after Nguyen Van Lieu, 56, was admitted to hospital.
Tran Nhu Duong, deputy director of the National Institute of Hygiene and Epidemiology, said H1N1 accounted for approximately 50 percent of flu cases in Vietnam in the first four months of 2013, while the comparable figure was less than 7 percent last year.
The original estimate of fatalities from the 2009-10 swine flu global pandemic by the World Health Organization was 18,500, but a study published in the UK-based Lancet Infectious Diseases journal last June said the death toll was much higher at between 284,500 and 579,000.
Scientists said H1N1 swine flu is contagious and caused by a combination of swine, avian, and human influenza viruses.
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