National influenza surveillance in Vietnam, 2006-2007.
In 2006, national influenza surveillance was implemented in Vietnam. Epidemiologic and demographic data and a throat swab for influenza testing were collected from a subset of outpatients with influenza-like illness (ILI). During January 1, 2006 through December 31, 2007, of 184,521 ILI cases identified at surveillance sites, 11,082 were tested and 2112 (19%) were positive for influenza by reverse transcription polymerase chain reaction. Influenza viruses were detected year-round, and similar peaks in influenza activity were observed in all surveillance regions, coinciding with cooler and rainy periods. Studies are needed to ascertain the disease burden and impact of influenza in Vietnam.
Nguyen
Hien T
HT
National Institute of Hygiene and Epidemiology, Hanoi, Viet Nam.
Dharan
Nila J
NJ
Le
Mai T Q
MT
Nguyen
Nguyen B
NB
Nguyen
Chung T
CT
Hoang
Dong V
DV
Tran
Huu N
HN
Bui
Chien T
CT
Dang
Dat T
DT
Pham
Dinh N
DN
Nguyen
Hoa T
HT
Phan
Tu V
TV
Dennis
David T
DT
Uyeki
Timothy M
TM
Mott
Joshua
J
Nguyen
Yen T
YT
D000293:Adolescent; D000328:Adult; D017677:Age Distribution; D002648:Child; D002675:Child, Preschool; D005843:Geography; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007251:Influenza, Human / Q000453:epidemiology*; D008875:Middle Aged; D011159:Population Surveillance; D014744:Vietnam / Q000453:epidemiology; D055815:Young Adult