Evidence map›Paper›PMID 31889080›Full record

ArticleScientific reports2019

Distinct climate influences on the risk of typhoid compared to invasive non-typhoid Salmonella disease in Blantyre, Malawi.

Deus Thindwa, Michael G Chipeta, Marc Y R Henrion, Melita A Gordon

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 1 pooled it
3.5field-weighted citation impact, top 8% 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

22 citing papers in PubMed, 1 synthesis or guideline pooled it, 37 citations in OpenAlex.

  1. Temperature and risk of infectious diarrhea: a systematic review and meta-analysis.Environmental science and pollution research international · 2021
    Pooled it
  2. Review
  3. Article
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  13. Typhoid fever.Nature reviews. Disease primers · 2023
    Review
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  19. Article
  20. Association between Ambient Temperature and Severe Diarrhoea in the National Capital Region, Philippines.International journal of environmental research and public health · 2021
    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

4 authors at 1 institution in 2 countries.

Deus ThindwaMalawi-Liverpool-Wellcome Trust Clinical Research Programme, Blantyre, Malawi. deus.thindwa@gmail.com.ORCID http://orcid.org/0000-0003-4845-7862
Michael G ChipetaMalawi-Liverpool-Wellcome Trust Clinical Research Programme, Blantyre, Malawi.ORCID http://orcid.org/0000-0001-5882-9936
Marc Y R HenrionMalawi-Liverpool-Wellcome Trust Clinical Research Programme, Blantyre, Malawi.
Melita A GordonMalawi-Liverpool-Wellcome Trust Clinical Research Programme, Blantyre, Malawi.
University of Liverpool · GB

Funding

Wellcome Trust
6 · The paper itself

Abstract

Invasive Salmonella diseases, both typhoid and invasive non-typhoidal Salmonella (iNTS), are seasonal bloodstream infections causing important morbidity and mortality globally in Africa. The reservoirs and transmission of both are not fully understood. We hypothesised that differences in the time-lagged relationships of rainfall or temperature with typhoid and iNTS incidence might infer differences in epidemiology. We assessed the dynamics of invasive Salmonella incidence over a 16-year period of surveillance, quantifying incidence peaks, seasonal variations, and nonlinear effects of rainfall and temperature exposures on the relative risks of typhoid and iNTS, using monthly lags. An increased relative risk of iNTS incidence was short-lasting but immediate after the onset of the rains, whereas that of typhoid was long-lasting but with a two months delayed start, implying a possible difference in transmission. The relative-risk function of temperature for typhoid was bimodal, with higher risk at both lower (with a 1 month lag) and higher (with a ≥4 months lag) temperatures, possibly reflecting the known patterns of short and long cycle typhoid transmission. In contrast, the relative-risk of iNTS was only increased at lower temperatures, suggesting distinct transmission mechanisms. Environmental and sanitation control strategies may be different for iNTS compared to typhoid disease.

Indexed as

ClimateAlgorithmsGeography, MedicalHumansIncidenceMalawiModels, TheoreticalPublic Health SurveillanceRainRisk AssessmentRisk FactorsSalmonella InfectionsTemperatureTyphoid Fever

Identifiers

PMID31889080
PMCPMC6937328
OpenAlexW2997834816

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.