Affililations: *National Institute of Health, Department of Medical Sciences
Source: Communicable Disease Journal 1998; 24(3): 444-449
Language: Thai with English abstract
During January 1994 to December 1997, a total of 976 specimens were collected at Public Health Center in Bangkok from out-patients with symptoms of upper respiratory viral diseases. Laboratory diagnosis was performed by viral isolation and viral detection with immuno-fluorescence (FA) and Hemagglutination inhibition test (HI). It was found that 331 cases (33.9%) were positive. The highest number, 253 cases (76.4%) of isolates were influenza viruses.The viral isolation results were as follow; 129 cases of influenza B (39.0%), 124 cases of influenza A (37.4%), 58 cases of adenovirus (17.5 %) 11 cases of parainfluenza virus (3.3%) and 9 cases of respiratory syncytial virus (2.7%), respectively. The outbreak of influenza viruses were found throughout the year and were frequently isolated during June to september. Adenovirus was isolated continuously without any clear seasonal distribution. Parainfluenza virus appeared periodically with a peak in December. Respiratory syncytial virus was mostly detected in September. The highest number of patients, 234 (70.7%) cases were under 15 years of age. Between male and female, infection rate was almost the same (1:1.03).