Dengue fever seroprevalence and risk factors, Texas-Mexico border, 2004.
Reported autochthonous dengue fever transmission in the United States has been limited to 5 south Texas border counties since 1980. We conducted a cross-sectional serosurvey in Brownsville, Texas, and Matamoros, Tamaulipas, Mexico (n = 600), in 2004 to assess dengue seroprevalence. Recent dengue infection was detected in 2% (95% confidence interval [CI] 0.5%-3.5%) and 7.3% (95% CI 4.3%-10.3%) of residents in Brownsville and Matamoros, respectively. Past infection was detected in 40% (95% CI 34%-45%) of Brownsville residents and 78% (95% CI 74%-83%) of Matamoros residents. For recent infection, only weekly family income <or=$100 was a significant predictor (adjusted odds ratio 3.2, 95% CI 1.3-8.0). Risk factors that predicted past dengue infection were presence of larval habitat, absence of air-conditioning and street drainage, and weekly family income <or=$100. Mosquito larvae were present in 30% of households in both cities. Our results show that dengue fever is endemic in this area of the southern Texas-Mexico border.
Brunkard
Joan Marie
JM
University of California, Santa Cruz, California, USA. jbrunkard@cdc.gov
Robles López
Jose Luis
JL
Ramirez
Josue
J
Cifuentes
Enrique
E
Rothenberg
Stephen J
SJ
Hunsperger
Elizabeth A
EA
Moore
Chester G
CG
Brussolo
Regina M
RM
Villarreal
Norma A
NA
Haddad
Brent M
BM
D000293:Adolescent; D000328:Adult; D000330:Aedes; D000368:Aged; D000369:Aged, 80 and over; D000818:Animals; D002980:Climate; D003430:Cross-Sectional Studies; D003715:Dengue / Q000453:epidemiology*; D017753:Ecosystem; D006801:Humans; D008800:Mexico / Q000453:epidemiology; D008875:Middle Aged; D012307:Risk Factors; D016036:Seroepidemiologic Studies; D012923:Social Class; D013781:Texas / Q000453:epidemiology