Role of residual spraying for malaria control in Belize

Donald R. Roberts; Erol Vanzie; Michael J. Bangs; John P. Grieco; Hubert Lenares; Paul Hshieh; Eliska Rejmankova; Sylvie Manguin; Richard G. Andre; Jorge Polanco

Role of residual spraying for malaria control in Belize

Donald R. Roberts^*, Erol Vanzie, Michael J. Bangs, John P. Grieco, Hubert Lenares, Paul Hshieh, Eliska Rejmankova, Sylvie Manguin, Richard G. Andre, Jorge Polanco

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

We studied the impact of reduced residual spraying in Belize by developing a logistic regression model on relationships between numbers of houses sprayed (mostly with DDT) and numbers of malaria cases. We defined the "minimum effective house spray rate" (MEHSR) as the level of spraying that will prevent increases in malaria rates for a defined population. Under the total coverage approach (all houses sprayed), the MEHSR for Belize was 134.6. The model also showed that the odds for decreasing malaria is 1.086 for each increase of 10 houses sprayed per 1000 population. In further testing, highly significant and differential changes in malaria rates were documented for paired groups of years with house spray rates that were either above or below the MEHSR. Numbers of malaria cases since 1995 are used to show how stratification methods are used in Belize to spray fewer houses (at levels below the MEHSR of 134.6).

Original language	English
Pages (from-to)	63-69
Number of pages	7
Journal	Journal of Vector Ecology
Volume	27
Issue number	1
State	Published - Jun 2002
Externally published	Yes

Keywords

Belize
Central America
DDT
Malaria
Malaria control
Residual spraying

Cite this

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title = "Role of residual spraying for malaria control in Belize",

abstract = "We studied the impact of reduced residual spraying in Belize by developing a logistic regression model on relationships between numbers of houses sprayed (mostly with DDT) and numbers of malaria cases. We defined the {"}minimum effective house spray rate{"} (MEHSR) as the level of spraying that will prevent increases in malaria rates for a defined population. Under the total coverage approach (all houses sprayed), the MEHSR for Belize was 134.6. The model also showed that the odds for decreasing malaria is 1.086 for each increase of 10 houses sprayed per 1000 population. In further testing, highly significant and differential changes in malaria rates were documented for paired groups of years with house spray rates that were either above or below the MEHSR. Numbers of malaria cases since 1995 are used to show how stratification methods are used in Belize to spray fewer houses (at levels below the MEHSR of 134.6).",

keywords = "Belize, Central America, DDT, Malaria, Malaria control, Residual spraying",

author = "Roberts, {Donald R.} and Erol Vanzie and Bangs, {Michael J.} and Grieco, {John P.} and Hubert Lenares and Paul Hshieh and Eliska Rejmankova and Sylvie Manguin and Andre, {Richard G.} and Jorge Polanco",

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TY - JOUR

T1 - Role of residual spraying for malaria control in Belize

AU - Roberts, Donald R.

AU - Vanzie, Erol

AU - Bangs, Michael J.

AU - Grieco, John P.

AU - Lenares, Hubert

AU - Hshieh, Paul

AU - Rejmankova, Eliska

AU - Manguin, Sylvie

AU - Andre, Richard G.

AU - Polanco, Jorge

PY - 2002/6

Y1 - 2002/6

N2 - We studied the impact of reduced residual spraying in Belize by developing a logistic regression model on relationships between numbers of houses sprayed (mostly with DDT) and numbers of malaria cases. We defined the "minimum effective house spray rate" (MEHSR) as the level of spraying that will prevent increases in malaria rates for a defined population. Under the total coverage approach (all houses sprayed), the MEHSR for Belize was 134.6. The model also showed that the odds for decreasing malaria is 1.086 for each increase of 10 houses sprayed per 1000 population. In further testing, highly significant and differential changes in malaria rates were documented for paired groups of years with house spray rates that were either above or below the MEHSR. Numbers of malaria cases since 1995 are used to show how stratification methods are used in Belize to spray fewer houses (at levels below the MEHSR of 134.6).

AB - We studied the impact of reduced residual spraying in Belize by developing a logistic regression model on relationships between numbers of houses sprayed (mostly with DDT) and numbers of malaria cases. We defined the "minimum effective house spray rate" (MEHSR) as the level of spraying that will prevent increases in malaria rates for a defined population. Under the total coverage approach (all houses sprayed), the MEHSR for Belize was 134.6. The model also showed that the odds for decreasing malaria is 1.086 for each increase of 10 houses sprayed per 1000 population. In further testing, highly significant and differential changes in malaria rates were documented for paired groups of years with house spray rates that were either above or below the MEHSR. Numbers of malaria cases since 1995 are used to show how stratification methods are used in Belize to spray fewer houses (at levels below the MEHSR of 134.6).

KW - Belize

KW - Central America

KW - DDT

KW - Malaria

KW - Malaria control

KW - Residual spraying

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M3 - Article

C2 - 12125874

AN - SCOPUS:0036597823

SN - 1081-1710

VL - 27

SP - 63

EP - 69

JO - Journal of Vector Ecology

JF - Journal of Vector Ecology

IS - 1

ER -

Role of residual spraying for malaria control in Belize

Abstract

Keywords

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