title: Pandemic Influenza A H1N1 in Oman: Epidemiology, Clinical Features, and Outcome of Patients Admitted to Sultan Qaboos University Hospital in 2009.
abstract: OBJECTIVE
  Oman experienced the H1N1 pandemic in 2009 that initially started in Mexico and the United States. We present the epidemiology, clinical features, and outcome of cases admitted to Sultan Qaboos University Hospital.
  
  
  METHODS
  We retrospectively reviewed all patients admitted with confirmed influenza A H1N1 infection from August to December 2009. The study included adults and pediatric patients. We looked at the clinical and laboratory factors associated with increased length of hospital stay.
  
  
  RESULTS
  There were 68 patients admitted with influenza A H1N1 infection, and their median age was 23 years. The most common symptoms were fever (100%) and cough (79.4%). The most common reason for admission was the severity of illness (69.1%). Lymphopenia was the most common hematological abnormality (41.8%). All patients received treatment with oseltamivir. One patient died secondary to multi-organ failure. On multivariate analysis, severity of illness, use of steroids, anemia, lymphopenia, and abnormal alanine amino transferase levels were associated with increased length of stay.
  
  
  CONCLUSIONS
  The H1N1 pandemic in Oman followed the international trends in terms of clinical presentation and laboratory values for patients admitted to the hospital.
authors.affiliation: Department of Medicine, Sultan Qaboos University, Muscat, Oman.
authors.forename: Mujahid
authors.initials: M
authors.lastname: Al-Busaidi
authors.affiliation: Department of Microbiology and Immunology, Sultan Qaboos University, Muscat, Oman.
authors.forename: Khuloud
authors.initials: K
authors.lastname: Al Maamari
authors.affiliation: Department of Microbiology and Immunology, Sultan Qaboos University, Muscat, Oman.
authors.forename: Badriya
authors.initials: B
authors.lastname: Al'Adawi
authors.affiliation: Department of Microbiology and Immunology, Sultan Qaboos University, Muscat, Oman.
authors.forename: Fatma Ba
authors.initials: FB
authors.lastname: Alawi
authors.affiliation: Ministry of Health, Muscat, Oman.
authors.forename: Adil
authors.initials: A
authors.lastname: Al-Wahaibi
authors.affiliation: Department of Medicine, Sultan Qaboos University, Muscat, Oman.
authors.forename: Abdullah
authors.initials: A
authors.lastname: Belkhair
keywords: Epidemics; Influenza A Virus, H1N1 Subtype; Influenza, Human; Oman