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Volume 27, Number 6—June 2021

Dispatch

Role of Anopheles stephensi Mosquitoes in Malaria Outbreak, Djibouti, 2019

Vincent Pommier de SantiComments to Author , Bouh Abdi Khaireh, Thomas Chiniard, Bruno Pradines, Nicolas Taudon, Sébastien Larréché, Abdoulraouf Bourhan Mohamed, Franck de Laval, Franck Berger, Florian Gala, Madjid Mokrane, Nicolas Benoit, Lionel Malan, Abdoulilah Ahmed Abdi, and Sébastien Briolant
Author affiliations: Aix Marseille University, IRD, AP-HM, SSA, VITROME, Marseille, France (V. Pommier de Santi, B. Pradines, N. Benoit, S. Briolant); IHU-Méditerranée Infection, Marseille (V. Pommier de Santi, B. Pradines, N. Benoit, S. Briolant); French Armed Forces Center for Epidemiology and Public Health, Marseille (V. Pommier de Santi, F. de Laval, F. Berger, M. Mokrane); United Nations Development Program, The Global Fund to Fight AIDS, Tuberculosis and Malaria, Djibouti, Republic of Djibouti (B.A. Khaireh); French Armed Forces Medical Health Service, Djibouti (T. Chiniard, F. Gala, L. Malan); French Armed Forces Biomedical Research Institute, Marseille (B. Pradines, N. Taudon, N. Benoit, S. Briolant); National Center for Malaria, Marseille (B. Pradines, N. Benoit); Bégin Military Teaching Hospital, Paris, France (S. Larréché); Djiboutian Gendarmerie Health Service, Djibouti (A. Bourhan Mohamed); Aix Marseille University, INSERM, IRD, Sciences Economiques & Sociales de la Santé & Traitement de l’Information Médicale, Marseille (F. de Laval, F. Berger); Djiboutian Armed Forces Health Service, Djibouti (A. Ahmed Abdi)

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Table

Adult and larval mosquitoes collected by human landing catches and traps, Djibouti, Republic of Djibouti, 2019*

Species and sampling method† No. (% female) Resources/time expended
Anopheles stephensi
HLC 1 (100.0) 2 persons/7 h
BG Sentinel Trap 1 (100.0) 2 traps/120 h
Larval emergence 190 (56.8)
Subtotal
 192 (57.3)
Aedes aegypti
HLC 11 (100.0) 2 persons/7 h
BG Sentinel Trap 88 (56.8) 2 traps/120 h
Suna Trap 10 (90.0) 2 traps/96 h
CDC Light Trap 2 (100.0) 2 traps/120 h
Larval emergence 32 (46.9)
Subtotal
 143 (60.8)
Culex quinquefasciatus
HLC 113 (100.0) 2 persons/7 h
BG Sentinel Trap 573 (68.2) 2 traps/120 h
Suna Trap 221 (57.5) 2 traps/96 h
CDC Light Trap 408 (66.2) 2 traps/120 h
Larval emergence 26 (92.3)
Subtotal
 1,341 (69.0)
Other Culex sp.
HLC 43 (100.0) 2 persons/7 h
BG Sentinel Trap 5 (40.0) 2 traps/120 h
Suna Trap 2 (100.0) 2 traps/96 h
CDC Light Trap 10 (100.0) 2 traps/120 h
Larval emergence 99 (71.7)
Subtotal
 159 (80.5)
Total 1,835 (68.1)

*HLC, human landing catch.
†Sampling methods were CDC Light traps, BG-Sentinel and Suna traps (Biogents, https://www.biogents.com), as well as HLC and larval emergence in laboratory. Each BG-Sentinel trap was baited with BG-MB5 attractant (Biogents) and a CO2 production system (>50,000 ppm) based on the fermentation of sugar, yeast, and agar. For larval emergence method, larvae were collected and reared in laboratory until imago emergence.

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Page created: April 07, 2021
Page updated: May 18, 2021
Page reviewed: May 18, 2021
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.
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