title: Dengue outbreak in a hilly state of Arunachal Pradesh in Northeast India.
abstract: Dengue has been reported from plains as well as hilly regions of India including some parts of Northeast India. In July-August 2012, outbreak of fever with unknown origin (FUO) indicative of Dengue was reported in Pasighat, East Siang district of Arunachal Pradesh (AP) state. Serum samples (n = 164) collected from patients from Health Training and Research Centre General Hospital, Pasighat, were tested for NS1 antigen and IgM antibodies. NS1-positive samples were analyzed by RT-PCR assay and entomological surveys were carried out. The majority of suspected cases reported NS1 antigen positivity. Females and young adults were mostly affected. The majority of the amplified NS1-positive samples showed Dengue serotype 3 infection. Aedes (Stegomyia) albopictus, known as semiurban breeding mosquitoes, was the only potential vector species identified from the affected areas of Pasighat which single handedly contributed to the outbreak. Thus, the present work identifies Dengue as an emerging arboviral infection in hilly state of AP along with a looming risk of its spread to neighbouring areas.
authors.affiliation: Entomology and Filariasis Division, Regional Medical Research Centre, (ICMR), NE Region, P.O. Box 105, Dibrugarh, Assam, India.
authors.forename: Siraj A
authors.initials: SA
authors.lastname: Khan
authors.affiliation: Entomology and Filariasis Division, Regional Medical Research Centre, (ICMR), NE Region, P.O. Box 105, Dibrugarh, Assam, India.
authors.forename: Prafulla
authors.initials: P
authors.lastname: Dutta
authors.affiliation: Entomology and Filariasis Division, Regional Medical Research Centre, (ICMR), NE Region, P.O. Box 105, Dibrugarh, Assam, India.
authors.forename: Rashmee
authors.initials: R
authors.lastname: Topno
authors.affiliation: Entomology and Filariasis Division, Regional Medical Research Centre, (ICMR), NE Region, P.O. Box 105, Dibrugarh, Assam, India.
authors.forename: Monika
authors.initials: M
authors.lastname: Soni
authors.affiliation: Entomology and Filariasis Division, Regional Medical Research Centre, (ICMR), NE Region, P.O. Box 105, Dibrugarh, Assam, India.
authors.forename: Jagadish
authors.initials: J
authors.lastname: Mahanta
mesh_terms: D000818:Animals; D009033:Culicidae; D003715:Dengue / Q000175:diagnosis / Q000453:epidemiology*; D003716:Dengue Virus / Q000145:classification; D004196:Disease Outbreaks; D004777:Environment; D062306:Geography, Medical; D006801:Humans; D007194:India / Q000453:epidemiology; D007303:Insect Vectors; D058889:Molecular Typing; D018571:Sentinel Surveillance; D012703:Serotyping