Evidence map›Paper›PMID 33602147›Full record

ArticleBMC infectious diseases2021

Endemic chikungunya fever in Kenyan children: a prospective cohort study.

Doris K Nyamwaya, Mark Otiende, Donwilliams O Omuoyo, George Githinji, Henry K Karanja, John N Gitonga, Zaydah R de Laurent, James R Otieno, Rosemary Sang, Everlyn Kamau and 6 more

Open access · goldAbstract read
In one paragraph

Article in BMC infectious diseases, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
4.5field-weighted citation impact, top 5% of its field
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

24 citing papers in PubMed, 33 citations in OpenAlex.

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  8. Predicting the ecological niches ofFrontiers in tropical diseases · 2025
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  16. Chikungunya outbreak in Africa: a review of the literature.Annals of medicine and surgery (2012) · 2023
    Article
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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

16 authors at 3 institutions in 4 countries.

Doris K Nyamwaya *KEMRI-Wellcome Trust Research Programme, P.O. Box 230-80108, Kilifi, Kenya.
Mark Otiende *KEMRI-Wellcome Trust Research Programme, P.O. Box 230-80108, Kilifi, Kenya.
Donwilliams O OmuoyoKEMRI-Wellcome Trust Research Programme, P.O. Box 230-80108, Kilifi, Kenya.
George GithinjiKEMRI-Wellcome Trust Research Programme, P.O. Box 230-80108, Kilifi, Kenya.
Henry K KaranjaKEMRI-Wellcome Trust Research Programme, P.O. Box 230-80108, Kilifi, Kenya.
John N GitongaKEMRI-Wellcome Trust Research Programme, P.O. Box 230-80108, Kilifi, Kenya.
Zaydah R de LaurentKEMRI-Wellcome Trust Research Programme, P.O. Box 230-80108, Kilifi, Kenya.
James R OtienoKEMRI-Wellcome Trust Research Programme, P.O. Box 230-80108, Kilifi, Kenya.
Rosemary SangKEMRI-Centre for Virus Research, Nairobi, Kenya.
Everlyn KamauKEMRI-Wellcome Trust Research Programme, P.O. Box 230-80108, Kilifi, Kenya.
Stanley CheruiyotKEMRI-Wellcome Trust Research Programme, P.O. Box 230-80108, Kilifi, Kenya.
Edward OtienoKEMRI-Wellcome Trust Research Programme, P.O. Box 230-80108, Kilifi, Kenya.
Charles N AgotiKEMRI-Wellcome Trust Research Programme, P.O. Box 230-80108, Kilifi, Kenya.
Philip BejonKEMRI-Wellcome Trust Research Programme, P.O. Box 230-80108, Kilifi, Kenya.
Samuel M ThumbiPaul G Allen School for Global Animal Health, Washington State University, Pullman, WA, 99164-7090, USA.
George M WarimweKEMRI-Wellcome Trust Research Programme, P.O. Box 230-80108, Kilifi, Kenya. gwarimwe@kemri-wellcome.org.ORCID http://orcid.org/0000-0002-4911-6333
Kenya Medical Research Institute · KEAngkor Hospital for Children · KHUniversity of Nairobi · KE

Funding

National Institute for Health Research 16/136/33Wellcome Trust 203077_Z_16_Z
6 · The paper itself

Abstract

backgroundChikungunya fever (CHIKF) was first described in Tanzania in 1952. Several epidemics including East Africa have occurred, but there are no descriptions of longitudinal surveillance of endemic disease. Here, we estimate the incidence of CHIKF in coastal Kenya and describe the associated viral phylogeny.

methodsWe monitored acute febrile illnesses among 3500 children visiting two primary healthcare facilities in coastal Kenya over a 5-year period (2014-2018). Episodes were linked to a demographic surveillance system and blood samples obtained. Cross-sectional sampling in a community survey of a different group of 435 asymptomatic children in the same study location was done in 2016. Reverse-transcriptase PCR was used for chikungunya virus (CHIKV) screening, and viral genomes sequenced for phylogenetic analyses.

resultsWe found CHIKF to be endemic in this setting, associated with 12.7% (95% CI 11.60, 13.80) of all febrile presentations to primary healthcare. The prevalence of CHIKV infections among asymptomatic children in the community survey was 0.7% (95% CI 0.22, 2.12). CHIKF incidence among children < 1 year of age was 1190 cases/100,000-person years and 63 cases/100,000-person years among children aged ≥10 years. Recurrent CHIKF episodes, associated with fever and viraemia, were observed among 19 of 170 children with multiple febrile episodes during the study period. All sequenced viral genomes mapped to the ECSA genotype albeit distinct from CHIKV strains associated with the 2004 East African epidemic.

conclusionsCHIKF may be a substantial public health burden in primary healthcare on the East African coast outside epidemic years, and recurrent infections are common.

Indexed as

AdolescentChikungunya FeverChikungunya virusChildChild, PreschoolCross-Sectional StudiesFemaleFeverGenotypeHumansIncidenceInfantKenyaMalePhylogenyPrevalence

Identifiers

PMID33602147
PMCPMC7889702
OpenAlexW3131729556

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

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.