Evidence map›Paper›PMID 36114561›Full record

ArticleTropical medicine and health2022

Characterization of influenza infection in a high-income urban setting in Nairobi, Kenya.

Gabriel Miring'u, Betty Muriithi, Hisashi Shoji, Samwel M L Symekher, Ernest Apondi Wandera, Claire Majisu, Mitsuo Takei, Koome Mwiraria, Yukie Saito, Satoshi Kaneko and 1 more

Open access · goldAbstract read
In one paragraph

Article in Tropical medicine and health, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact, top 82% 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

1 citing paper in PubMed, 0 citations in OpenAlex.

  1. 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

11 authors at 3 institutions in 2 countries.

Gabriel Miring'u *Institute of Tropical Medicine, Nagasaki University-Kenya Medical Research Institute Project, 19993-00202, Nairobi, Kenya.
Betty Muriithi *Institute of Tropical Medicine, Nagasaki University-Kenya Medical Research Institute Project, 19993-00202, Nairobi, Kenya. blmuriithi@gmail.com.ORCID http://orcid.org/0000-0003-4458-2420
Hisashi ShojiEmbassy of Japan, La Paz, Bolivia.
Samwel M L SymekherCenter for Virus Research, KEMRI, Nairobi, Kenya.
Ernest Apondi WanderaInstitute of Tropical Medicine, Nagasaki University-Kenya Medical Research Institute Project, 19993-00202, Nairobi, Kenya.
Claire MajisuLavington Pediatrics, Lavington, Nairobi, Kenya.
Mitsuo TakeiForest Japan Medical Centre, Nairobi, Kenya.
Koome MwirariaJ.G. Medical Clinic, Nairobi, Kenya.
Yukie SaitoInstitute of Tropical Medicine, Nagasaki University-Kenya Medical Research Institute Project, 19993-00202, Nairobi, Kenya.
Satoshi KanekoInstitute of Tropical Medicine, Nagasaki University-Kenya Medical Research Institute Project, 19993-00202, Nairobi, Kenya.
Issei TokimatsuDivision of Clinical Infectious Diseases, Department of Internal Medicine, School of Medicine, Showa University, Tokyo, Japan.
Kenya Medical Research Institute · KEKenya Forest Service · KEShowa University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundInfluenza viruses are an important cause of respiratory infections across all age groups. Information on occurrence and magnitude of influenza virus infections in different populations in Kenya however remains scanty, compromising estimation of influenza disease burden. This study examined influenza infection in an urban high-income setting in Nairobi to establish its prevalence and activity of influenza viruses, and evaluated diagnostic performance of a rapid influenza diagnostic test. METHODOLOGY: A cross-sectional hospital-based study was conducted in six private health facilities located within high-income residential areas in Nairobi from January 2019 to July 2020. Patients of all ages presenting with influenza-like illness (ILI) were recruited into the study. Detection of influenza virus was conducted using rapid diagnosis and reverse transcription-polymerase chain reaction (RT-PCR). Data were summarized using descriptive statistics and tests of association. Sensitivity, specificity and area under receiver operating characteristics curve was calculated to establish diagnostic accuracy of the rapid diagnosis test.

resultsThe study recruited 125 participants with signs and symptoms of ILI, of whom 21 (16.8%) were positive for influenza viruses. Of all the influenza-positive cases, 17 (81.0%) were influenza type A of which 70.6% were pandemic H1N1 (A/H1N1 2009). Highest detection was observed among children aged 5-10 years. Influenza virus mostly circulated during the second half of the year, and fever, general fatigue and muscular and joint pain were significantly observed among participants with influenza virus. Sensitivity and specificity of the diagnostic test was 95% (95% confidence interval 75.1-99.9) and 100% (95% confidence interval 96.5-100.0), respectively.

conclusionsFindings of this study shows continuous but variable activity of influenza virus throughout the year in this population, with substantial disease burden. The findings highlight the need for continuous epidemiologic surveillance including genetic surveillance to monitor activity and generate data to inform vaccine introduction or development, and other interventions.

Indexed as

DiagnosisInfluenza virusPrevalence

Identifiers

PMID36114561
PMCPMC9479273
OpenAlexW4296162584

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LicenceCC BY
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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.