PubMed · 2010 · 26 citations · 0 references
Veterinary MedicineInfectious DiseasesInfectious Disease EpidemiologyMedical MicrobiologyVirologyInfluenza-like Illness SurveillanceRespiratory InfectionsRespiratory Infectious DiseasesRespiratory Tract InfectionsSeasonal Transmission PatternsSeasonality In Disease OccurrenceSeasonal Influenza SurveillanceSeasonal Respiratory Infection Patterns
From 2005 to 2009, the Institute for Medical Research (IMR), Kuala Lumpur received a total of 7,117 respiratory specimens from patients with influenza-like illness (ILI) for influenza screening. Seasonal influenza virus was isolated from 17.3% of patients with ILI in 2005, 31.6% in 2006, 12.8% in 2007, 10.2% in 2008 and 13.5% in 2009. There were one or more influenza A and B virus strains circulating in Malaysia throughout the year, with distinctly a peak in May to August. The predominant circulating strains of seasonal influenza A were A/California/7/2004-like (H3N2) in 2005, A/New Caledonia/20/99-like (H1N1) in 2006, A/ Brisbane/10/2007-like (H3N2) in 2007 and 2008, and A/Perth/16/2009-like (H3N2) virus in 2009. The predominant circulating strains of influenza B were B/Hong Kong/330/2001-like in 2005, B/Malaysia/2506/2004-like in 2006, B/Florida/4/2006-like in 2007 and 2008, and B/Brisbane/60/2008-like in 2009.