The Centres for Disease Control light trap (CDC-LT) and the human decoy trap (HDT) compared to the human landing catch (HLC) for measuring Anopheles biting in rural Tanzania

Vector mosquito biting intensity is an important measure to understand malaria transmission. Human landing catch (HLC) is an effective but labour-intensive, expensive, and potentially hazardous entomological surveillance tool. The Centres for Disease Control light trap (CDC-LT) and the human decoy t...

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Bibliographic Details
Published in:Malaria journal 2022-06, Vol.21 (1), p.181-181, Article 181
Main Authors: Namango, Isaac Haggai, Marshall, Carly, Saddler, Adam, Ross, Amanda, Kaftan, David, Tenywa, Frank, Makungwa, Noely, Odufuwa, Olukayode G, Ligema, Godfrey, Ngonyani, Hassan, Matanila, Isaya, Bharmal, Jameel, Moore, Jason, Moore, Sarah J, Hetzel, Manuel W
Format: Article
Language:English
Subjects:
Abundance
Adult
Animals
Anopheles
Anopheles biting
Aquatic insects
Biting
Centers for Disease Control and Prevention, U.S
Collections
Community composition
Culicidae
Disease control
Disease transmission
Entomological monitoring
Entomology
Female
Global positioning systems
GPS
Houses
Human diseases
Humans
Inoculation
Labour
Malaria
Mosquito Control
Mosquito traps
Mosquito Vectors
Mosquitoes
Performance evaluation
Population studies
Species composition
Surveillance
Surveys
Tanzania
Traps
United States
Variability
Vector-borne diseases
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Summary:Vector mosquito biting intensity is an important measure to understand malaria transmission. Human landing catch (HLC) is an effective but labour-intensive, expensive, and potentially hazardous entomological surveillance tool. The Centres for Disease Control light trap (CDC-LT) and the human decoy trap (HDT) are exposure-free alternatives. This study compared the CDC-LT and HDT against HLC for measuring Anopheles biting in rural Tanzania and assessed their suitability as HLC proxies. Indoor mosquito surveys using HLC and CDC-LT and outdoor surveys using HLC and HDT were conducted in 2017 and in 2019 in Ulanga, Tanzania in 19 villages, with one trap/house/night. Species composition, sporozoite rates and density/trap/night were compared. Aggregating the data by village and month, the Bland-Altman approach was used to assess agreement between trap types. Overall, 66,807 Anopheles funestus and 14,606 Anopheles arabiensis adult females were caught with 6,013 CDC-LT, 339 indoor-HLC, 136 HDT and 195 outdoor-HLC collections. Indoors, CDC-LT caught fewer An. arabiensis (Adjusted rate ratio [Adj.RR] = 0.35, 95% confidence interval [CI]: 0.27-0.46, p 
ISSN:1475-2875
1475-2875
DOI:10.1186/s12936-022-04192-9