Global risk mapping for major diseases transmitted by Aedes aegypti and Aedes albopictus

Samson Leta, Tariku Jibat Beyene, Eva M. De Clercq, Kebede Amenu, Moritz U.G. Kraemer, Crawford W. Revie

Research output: Contribution to journalArticle

44 Citations (Scopus)

Abstract

OBJECTIVES: The objective of this study was to map the global risk of the major arboviral diseases transmitted by Aedes aegypti and Aedes albopictus by identifying areas where the diseases are reported, either through active transmission or travel-related outbreaks, as well as areas where the diseases are not currently reported but are nonetheless suitable for the vector.

METHODS: Data relating to five arboviral diseases (Zika, dengue fever, chikungunya, yellow fever, and Rift Valley fever (RVF)) were extracted from some of the largest contemporary databases and paired with data on the known distribution of their vectors, A. aegypti and A. albopictus. The disease occurrence data for the selected diseases were compiled from literature dating as far back as 1952 to as recent as 2017. The resulting datasets were aggregated at the country level, except in the case of the USA, where state-level data were used. Spatial analysis was used to process the data and to develop risk maps.

RESULTS: Out of the 250 countries/territories considered, 215 (86%) are potentially suitable for the survival and establishment of A. aegypti and/or A. albopictus. A. albopictus has suitability foci in 197 countries/territories, while there are 188 that are suitable for A. aegypti. There is considerable variation in the suitability range among countries/territories, but many of the tropical regions of the world provide high suitability over extensive areas. Globally, 146 (58.4%) countries/territories reported at least one arboviral disease, while 123 (49.2%) reported more than one of the above diseases. The overall numbers of countries/territories reporting autochthonous vector-borne occurrences of Zika, dengue, chikungunya, yellow fever, and RVF, were 85, 111, 106, 43, and 39, respectively.

CONCLUSIONS: With 215 countries/territories potentially suitable for the most important arboviral disease vectors and more than half of these reporting cases, arboviral diseases are indeed a global public health threat. The increasing proportion of reports that include multiple arboviral diseases highlights the expanding range of their common transmission vectors. The shared features of these arboviral diseases should motivate efforts to combine interventions against these diseases.

LanguageEnglish
Pages25-35
Number of pages11
JournalInternational Journal of Infectious Diseases
Volume67
Early online date28 Nov 2017
DOIs
Publication statusPublished - 28 Feb 2018

Fingerprint

Aedes
Rift Valley Fever
Yellow Fever
Dengue
Disease Vectors
Spatial Analysis
Disease Outbreaks
Public Health
Databases

Keywords

  • Aedes
  • animals
  • arbovirus Infections
  • chikungunya fever
  • dengue
  • disease outbreaks
  • global health
  • humans
  • mosquito vectors
  • Rift Valley fever
  • risk assessment
  • yellow fever
  • zika virus infection

Cite this

Leta, Samson ; Beyene, Tariku Jibat ; De Clercq, Eva M. ; Amenu, Kebede ; Kraemer, Moritz U.G. ; Revie, Crawford W. / Global risk mapping for major diseases transmitted by Aedes aegypti and Aedes albopictus. In: International Journal of Infectious Diseases. 2018 ; Vol. 67. pp. 25-35.
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abstract = "OBJECTIVES: The objective of this study was to map the global risk of the major arboviral diseases transmitted by Aedes aegypti and Aedes albopictus by identifying areas where the diseases are reported, either through active transmission or travel-related outbreaks, as well as areas where the diseases are not currently reported but are nonetheless suitable for the vector.METHODS: Data relating to five arboviral diseases (Zika, dengue fever, chikungunya, yellow fever, and Rift Valley fever (RVF)) were extracted from some of the largest contemporary databases and paired with data on the known distribution of their vectors, A. aegypti and A. albopictus. The disease occurrence data for the selected diseases were compiled from literature dating as far back as 1952 to as recent as 2017. The resulting datasets were aggregated at the country level, except in the case of the USA, where state-level data were used. Spatial analysis was used to process the data and to develop risk maps.RESULTS: Out of the 250 countries/territories considered, 215 (86{\%}) are potentially suitable for the survival and establishment of A. aegypti and/or A. albopictus. A. albopictus has suitability foci in 197 countries/territories, while there are 188 that are suitable for A. aegypti. There is considerable variation in the suitability range among countries/territories, but many of the tropical regions of the world provide high suitability over extensive areas. Globally, 146 (58.4{\%}) countries/territories reported at least one arboviral disease, while 123 (49.2{\%}) reported more than one of the above diseases. The overall numbers of countries/territories reporting autochthonous vector-borne occurrences of Zika, dengue, chikungunya, yellow fever, and RVF, were 85, 111, 106, 43, and 39, respectively.CONCLUSIONS: With 215 countries/territories potentially suitable for the most important arboviral disease vectors and more than half of these reporting cases, arboviral diseases are indeed a global public health threat. The increasing proportion of reports that include multiple arboviral diseases highlights the expanding range of their common transmission vectors. The shared features of these arboviral diseases should motivate efforts to combine interventions against these diseases.",
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Global risk mapping for major diseases transmitted by Aedes aegypti and Aedes albopictus. / Leta, Samson; Beyene, Tariku Jibat; De Clercq, Eva M.; Amenu, Kebede; Kraemer, Moritz U.G.; Revie, Crawford W.

In: International Journal of Infectious Diseases, Vol. 67, 28.02.2018, p. 25-35.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Global risk mapping for major diseases transmitted by Aedes aegypti and Aedes albopictus

AU - Leta, Samson

AU - Beyene, Tariku Jibat

AU - De Clercq, Eva M.

AU - Amenu, Kebede

AU - Kraemer, Moritz U.G.

AU - Revie, Crawford W.

N1 - Copyright © 2017 The Authors. Published by Elsevier Ltd.. All rights reserved.

PY - 2018/2/28

Y1 - 2018/2/28

N2 - OBJECTIVES: The objective of this study was to map the global risk of the major arboviral diseases transmitted by Aedes aegypti and Aedes albopictus by identifying areas where the diseases are reported, either through active transmission or travel-related outbreaks, as well as areas where the diseases are not currently reported but are nonetheless suitable for the vector.METHODS: Data relating to five arboviral diseases (Zika, dengue fever, chikungunya, yellow fever, and Rift Valley fever (RVF)) were extracted from some of the largest contemporary databases and paired with data on the known distribution of their vectors, A. aegypti and A. albopictus. The disease occurrence data for the selected diseases were compiled from literature dating as far back as 1952 to as recent as 2017. The resulting datasets were aggregated at the country level, except in the case of the USA, where state-level data were used. Spatial analysis was used to process the data and to develop risk maps.RESULTS: Out of the 250 countries/territories considered, 215 (86%) are potentially suitable for the survival and establishment of A. aegypti and/or A. albopictus. A. albopictus has suitability foci in 197 countries/territories, while there are 188 that are suitable for A. aegypti. There is considerable variation in the suitability range among countries/territories, but many of the tropical regions of the world provide high suitability over extensive areas. Globally, 146 (58.4%) countries/territories reported at least one arboviral disease, while 123 (49.2%) reported more than one of the above diseases. The overall numbers of countries/territories reporting autochthonous vector-borne occurrences of Zika, dengue, chikungunya, yellow fever, and RVF, were 85, 111, 106, 43, and 39, respectively.CONCLUSIONS: With 215 countries/territories potentially suitable for the most important arboviral disease vectors and more than half of these reporting cases, arboviral diseases are indeed a global public health threat. The increasing proportion of reports that include multiple arboviral diseases highlights the expanding range of their common transmission vectors. The shared features of these arboviral diseases should motivate efforts to combine interventions against these diseases.

AB - OBJECTIVES: The objective of this study was to map the global risk of the major arboviral diseases transmitted by Aedes aegypti and Aedes albopictus by identifying areas where the diseases are reported, either through active transmission or travel-related outbreaks, as well as areas where the diseases are not currently reported but are nonetheless suitable for the vector.METHODS: Data relating to five arboviral diseases (Zika, dengue fever, chikungunya, yellow fever, and Rift Valley fever (RVF)) were extracted from some of the largest contemporary databases and paired with data on the known distribution of their vectors, A. aegypti and A. albopictus. The disease occurrence data for the selected diseases were compiled from literature dating as far back as 1952 to as recent as 2017. The resulting datasets were aggregated at the country level, except in the case of the USA, where state-level data were used. Spatial analysis was used to process the data and to develop risk maps.RESULTS: Out of the 250 countries/territories considered, 215 (86%) are potentially suitable for the survival and establishment of A. aegypti and/or A. albopictus. A. albopictus has suitability foci in 197 countries/territories, while there are 188 that are suitable for A. aegypti. There is considerable variation in the suitability range among countries/territories, but many of the tropical regions of the world provide high suitability over extensive areas. Globally, 146 (58.4%) countries/territories reported at least one arboviral disease, while 123 (49.2%) reported more than one of the above diseases. The overall numbers of countries/territories reporting autochthonous vector-borne occurrences of Zika, dengue, chikungunya, yellow fever, and RVF, were 85, 111, 106, 43, and 39, respectively.CONCLUSIONS: With 215 countries/territories potentially suitable for the most important arboviral disease vectors and more than half of these reporting cases, arboviral diseases are indeed a global public health threat. The increasing proportion of reports that include multiple arboviral diseases highlights the expanding range of their common transmission vectors. The shared features of these arboviral diseases should motivate efforts to combine interventions against these diseases.

KW - Aedes

KW - animals

KW - arbovirus Infections

KW - chikungunya fever

KW - dengue

KW - disease outbreaks

KW - global health

KW - humans

KW - mosquito vectors

KW - Rift Valley fever

KW - risk assessment

KW - yellow fever

KW - zika virus infection

UR - https://www.sciencedirect.com/journal/international-journal-of-infectious-diseases

U2 - 10.1016/j.ijid.2017.11.026

DO - 10.1016/j.ijid.2017.11.026

M3 - Article

VL - 67

SP - 25

EP - 35

JO - International Journal of Infectious Diseases

T2 - International Journal of Infectious Diseases

JF - International Journal of Infectious Diseases

SN - 1201-9712

ER -