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1.
Article in English | IMSEAR | ID: sea-44545

ABSTRACT

An outbreak of Influenza A virus occurred in a hilltribe village between July 18th and August 8th, 1997. The overall infection rate was 92.5 per cent. The household infection rate was higher in the crowded part of the village. The symptoms analyzed after all, were fever (100%), cough (99%), headache, myalgia (78.1%) and rhinorrhea (50.5%). The patients were self - recovery within 5-7 days. Isolation and Haemagglutination inhibition test (HI) were undertaken to identify the causative agent. The results were positive for influenza A/Wuhan/359/95(H3N2) - like strain. The outbreak did not spread to the town, possibly because of the differences in environmental condition. Predisposing factors of the village that may have influenced the outbreak were crowded living quarters, cold (8 - 10 degrees C) and moist weather, poor personal hygiene and improper sanitation.


Subject(s)
Disease Outbreaks , Female , Humans , Influenza A virus , Influenza, Human/diagnosis , Male , Rural Population , Thailand/epidemiology
2.
Southeast Asian J Trop Med Public Health ; 2000 Mar; 31(1): 57-61
Article in English | IMSEAR | ID: sea-31465

ABSTRACT

A prospective study was conducted to find the incidence and clinical manifestations of influenza in 201 nurse assistant students of Faculty of Tropical Medicine during June 1998 to May 1999. There were 106 episodes of influenza-like illness (incidence 52.7%) of which only 33% were proven to be influenza (incidence 17.4%). Main clinical manifestations of influenza included headache, fever, malaise, myalgia, rhinorrhea, cough, and sore throat. We found that influenza could not be diagnosed solely by using clinical manifestations. Respiratory pathogenic bacteria were rarely isolated in patients with influenza-like illness and this led to our suggestion that routine pharyngeal culture and antibiotic therapy would not be helpful. Influenza vaccination of every nurse assistant student would be beneficial.


Subject(s)
Adolescent , Adult , Female , Humans , Incidence , Influenza, Human/epidemiology , Male , Nursing Assistants , Prospective Studies , Seasons , Students, Health Occupations , Thailand/epidemiology
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