| influenza epidemiology and characterization of influenza viruses in patients seeking treatment for acute fever in cambodia. | the epidemiology, symptomology, and viral aetiology of endemic influenza remain largely uncharacterized in cambodia. in december 2006, we established passive hospital-based surveillance to identify the causes of acute undifferentiated fever in patients seeking healthcare. fever was defined as tympanic membrane temperature >38 degrees c. from december 2006 to december 2008, 4233 patients were screened for influenza virus by real-time reverse-transcriptase polymerase chain reaction (rrt-pcr). of t ... | 2010 | 19698213 |