Abstract:
:Fiji recently experienced a sharp increase in reported typhoid fever cases. To investigate geographic distribution and environmental risk factors associated with Salmonella enterica serovar Typhi infection, we conducted a cross-sectional cluster survey with associated serologic testing for Vi capsular antigen-specific antibodies (a marker for exposure to Salmonella Typhi in Fiji in 2013. Hotspots with high seroprevalence of Vi-specific antibodies were identified in northeastern mainland Fiji. Risk for Vi seropositivity increased with increased annual rainfall (odds ratio [OR] 1.26/quintile increase, 95% CI 1.12-1.42), and decreased with increased distance from major rivers and creeks (OR 0.89/km increase, 95% CI 0.80-0.99) and distance to modeled flood-risk areas (OR 0.80/quintile increase, 95% CI 0.69-0.92) after being adjusted for age, typhoid fever vaccination, and home toilet type. Risk for exposure to Salmonella Typhi and its spatial distribution in Fiji are driven by environmental factors. Our findings can directly affect typhoid fever control efforts in Fiji.
journal_name
Emerg Infect Disjournal_title
Emerging infectious diseasesauthors
de Alwis R,Watson C,Nikolay B,Lowry JH,Thieu NTV,Van TT,Ngoc DTT,Rawalai K,Taufa M,Coriakula J,Lau CL,Nilles EJ,Edmunds WJ,Kama M,Baker S,Cano Jdoi
10.3201/eid2402.170704subject
Has Abstractpub_date
2018-02-01 00:00:00pages
284-293issue
2eissn
1080-6040issn
1080-6059journal_volume
24pub_type
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