Dataset Information

Household spraying in cholera outbreaks: Insights from three exploratory, mixed-methods field effectiveness evaluations.

ABSTRACT: Household spraying is a commonly implemented, yet an under-researched, cholera response intervention where a response team sprays surfaces in cholera patients' houses with chlorine. We conducted mixed-methods evaluations of three household spraying programs in the Democratic Republic of Congo and Haiti, including 18 key informant interviews, 14 household surveys and observations, and 418 surface samples collected before spraying, 30 minutes and 24 hours after spraying. The surfaces consistently most contaminated with Vibrio cholerae were food preparation areas, near the patient's bed and the latrine. Effectiveness varied between programs, with statistically significant reductions in V. cholerae concentrations 30 minutes after spraying in two programs. Surface contamination after 24 hours was variable between households and programs. Program challenges included difficulty locating households, transportation and funding limitations, and reaching households quickly after case presentation (disinfection occurred 2-6 days after reported cholera onset). Program advantages included the concurrent deployment of hygiene promotion activities. Further research is indicated on perception, recontamination, cost-effectiveness, viable but nonculturable V. cholerae, and epidemiological coverage. We recommend that, if spraying is implemented, spraying agents should: disinfect surfaces systematically until wet using 0.2/2.0% chlorine solution, including kitchen spaces, patients' beds, and latrines; arrive at households quickly; and, concurrently deploy hygiene promotion activities.

SUBMITTER: Gallandat K

PROVIDER: S-EPMC7485970 | biostudies-literature | 2020 Aug

REPOSITORIES: biostudies-literature

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Household spraying in cholera outbreaks: Insights from three exploratory, mixed-methods field effectiveness evaluations.

Gallandat Karin K Huang Annie A Rayner Justine J String Gabrielle G Lantagne Daniele S DS

PLoS neglected tropical diseases 20200831 8

Household spraying is a commonly implemented, yet an under-researched, cholera response intervention where a response team sprays surfaces in cholera patients' houses with chlorine. We conducted mixed-methods evaluations of three household spraying programs in the Democratic Republic of Congo and Haiti, including 18 key informant interviews, 14 household surveys and observations, and 418 surface samples collected before spraying, 30 minutes and 24 hours after spraying. The surfaces consistently ...[more]

PMID: 32866145

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Dataset Information

Household spraying in cholera outbreaks: Insights from three exploratory, mixed-methods field effectiveness evaluations.

Publications

Household spraying in cholera outbreaks: Insights from three exploratory, mixed-methods field effectiveness evaluations.

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