Evidence map›Paper›PMID 37055836›Full record

ArticleMalaria journal2023

High vector diversity and malaria transmission dynamics in five sentinel sites in Cameroon.

Etienne Fondjo, Jean-Claude Toto, Magellan Tchouakui, Wolfgang Ekoko Eyisap, Salomon Patchoke, Benjamin Menze, Boris Njeambosay, Francis Zeukeug, Raymond Tabue Ngomdjum, Elysée Mandeng and 15 more

Abstract read
In one paragraph

Article in Malaria journal, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

14 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Complex non-Research square · 2026
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  4. Mechanisms of carbamate resistance in the malaria vector:Parasite epidemiology and control · 2026
    Review
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  11. Review
  12. Review
  13. Article
  14. High efficacy of chlorfenapyr-based net InterceptorInfectious diseases of poverty · 2023
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

25 authors.

Etienne FondjoU.S. President's Malaria Initiative (PMI) VectorLink Project, Abt Associates, Yaoundé, Cameroon.
Jean-Claude TotoCentral African Organization for Endemic Disease Control (OCEAC), Yaoundé, Cameroon.
Magellan TchouakuiCentre for Research in Infectious Diseases (CRID), Yaoundé, Cameroon.
Wolfgang Ekoko EyisapCentral African Organization for Endemic Disease Control (OCEAC), Yaoundé, Cameroon.
Salomon PatchokeThe Biotechnology Center (BTC), University of Yaoundé 1, Yaoundé, Cameroon.
Benjamin MenzeCentre for Research in Infectious Diseases (CRID), Yaoundé, Cameroon.
Boris NjeambosayThe Biotechnology Center (BTC), University of Yaoundé 1, Yaoundé, Cameroon.
Francis ZeukeugThe Biotechnology Center (BTC), University of Yaoundé 1, Yaoundé, Cameroon.
Raymond Tabue NgomdjumNational Malaria Control Programme, Yaoundé, Cameroon.
Elysée MandengCentral African Organization for Endemic Disease Control (OCEAC), Yaoundé, Cameroon.
Emmanuel Elanga-NdilleCentre for Research in Infectious Diseases (CRID), Yaoundé, Cameroon.
Edmond KopyaCentral African Organization for Endemic Disease Control (OCEAC), Yaoundé, Cameroon.
Jerome Achille BinyangCentre for Research in Infectious Diseases (CRID), Yaoundé, Cameroon.
Cyrille NdoCentre for Research in Infectious Diseases (CRID), Yaoundé, Cameroon.
Billy Tene-FossogCentre for Research in Infectious Diseases (CRID), Yaoundé, Cameroon.
Armel TedjouCentre for Research in Infectious Diseases (CRID), Yaoundé, Cameroon.
Elysée NchoutpouenCentral African Organization for Endemic Disease Control (OCEAC), Yaoundé, Cameroon.
Frederic TchouineU.S. President's Malaria Initiative (PMI) VectorLink Project, Abt Associates, Yaoundé, Cameroon.
Dorothy AchuNational Malaria Control Programme, Yaoundé, Cameroon.
Kelley AmbroseU.S. President's Malaria Initiative VectorLink Project, Abt Associates, Rockville, MD, USA.
Judith HedjeU.S. President's Malaria Initiative, U.S. Centers for Disease Control and Prevention (CDC), Yaoundé, Cameroon.
Celestin KouambengU.S. President's Malaria Initiative U.S. Agency for International Development (USAID), Yaoundé, Cameroon.
Jenny CarlsonU.S. President's Malaria Initiative, USAID, Washington, DC, USA.
Sarah ZohdyU.S. President's Malaria Initiative, U.S. Centers for Disease Control and Prevention (CDC), Atlanta, GA, USA.
Joseph ChabiU.S. President's Malaria Initiative VectorLink Project, Abt Associates, Rockville, MD, USA. Joseph_Chabi@pmivectorlink.com.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundMalaria remains one of the main causes of morbidity and mortality in Cameroon. To inform vector control intervention decision making, malaria vector surveillance was conducted monthly from October 2018 to September 2020 in five selected sentinel sites (Gounougou and Simatou in the North, and Bonabéri, Mangoum and Nyabessang in the South).

methodsHuman landing catches (HLCs), U.S. Centers for Disease Control and Prevention (CDC) light traps, and pyrethrum spray catches (PSCs) were used to assess vector density, species composition, human biting rate (HBR), endophagic index, indoor resting density (IRD), parity, sporozoite infection rates, entomological inoculation rate (EIR), and Anopheles vectorial capacity.

resultsA total of 139,322 Anopheles mosquitoes from 18 species (or 21 including identified sub-species) were collected across all sites. Out of the 18 species, 12 were malaria vectors including Anopheles gambiae sensu lato (s.l.), Anopheles funestus s.l.., Anopheles nili, Anopheles moucheti, Anopheles paludis, Anopheles demeilloni, Anopheles. pharoensis, Anopheles ziemanni, Anopheles multicinctus, Anopheles tenebrosus, Anopheles rufipes, and Anopheles marshallii. Anopheles gambiae s.l. remains the major malaria vector (71% of the total Anopheles) collected, though An. moucheti and An. paludis had the highest sporozoite rates in Nyabessang. The mean indoor HBR of Anopheles ranged from 11.0 bites/human/night (b/h/n) in Bonabéri to 104.0 b/h/n in Simatou, while outdoors, it varied from 24.2 b/h/n in Mangoum to 98.7 b/h/n in Simatou. Anopheles gambiae s.l. and An. moucheti were actively biting until at least 8:00 a.m. The mean Anopheles IRD was 17.1 females/room, and the parity rate was 68.9%. The mean EIRs for each site were 55.4 infective bites/human/month (ib/h/m) in Gounougou, 99.0 ib/h/m in Simatou, 51.2 ib/h/m in Mangoum, 24.4 ib/h/m in Nyabessang, and 18.1 ib/h/m in Bonabéri. Anopheles gambiae s.l. was confirmed as the main malaria vector with the highest vectorial capacity in all sites based on sporozoite rate, except in Nyabessang.

conclusionThese findings highlight the high malaria transmission occurring in Cameroon and will support the National Malaria Control Program to design evidence-based malaria vector control strategies, and deployment of effective and integrated vector control interventions to reduce malaria transmission and burden in Cameroon, where several Anopheles species could potentially maintain year-round transmission.

Indexed as

AnophelesMalariaPyrethrinsAnimalsCameroonFemaleHumansMosquito VectorsSporozoitesPyrethrinsCameroonMalaria transmissionVector diversityVectorial capacity

Identifiers

PMID37055836
PMCPMC10100606

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.