ArticleInfluenza and other respiratory viruses2018
Dynamics of influenza in tropical Africa: Temperature, humidity, and co-circulating (sub)types.
Article in Influenza and other respiratory viruses, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 1 of them a synthesis that pooled 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.
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.
Who cites it
23 citing papers in PubMed, 1 synthesis or guideline pooled it.
- The epidemiology of seasonal influenza after the 2009 influenza pandemic in Africa: a systematic review.African health sciences · 2020Pooled it
- Associations of telomere length with risk of mortality from influenza and pneumonia in US adults: a prospective cohort study of NHANES 1999-2002.Aging clinical and experimental research · 2023Article
- The impact of current and future climates on spatiotemporal dynamics of influenza in a tropical setting.PNAS nexus · 2023Article
- Impact of meteorological and demographic factors on the influenza epidemic in Japan: a large observational database study.Scientific reports · 2023Observational
- Association between Temperature and Influenza Activity across Different Regions of China during 2010-2017.Viruses · 2023Article
- Circulation and seasonality of influenza viruses in different transmission zones in Africa.BMC infectious diseases · 2022Article
- Short-term impact of ambient temperature on the incidence of influenza in Wuhan, China.Environmental science and pollution research international · 2022Article
- Associations between Temperature and Influenza Activity: A National Time Series Study in China.International journal of environmental research and public health · 2021Article
- Facility-based surveillance for influenza and respiratory syncytial virus in rural Zambia.BMC infectious diseases · 2021Article
- A prospective observational study of community acquired pneumonia in Kenya: the role of viral pathogens.BMC infectious diseases · 2021Observational
- Modeling influenza seasonality in the tropics and subtropics.PLoS computational biology · 2021Article
- Implications of monsoon season and UVB radiation for COVID-19 in India.Scientific reports · 2021Article
- The Impact of Climate Change on Vaccine-Preventable Diseases: Insights From Current Research and New Directions.Current environmental health reports · 2020Review
- Evidence of protective role of Ultraviolet-B (UVB) radiation in reducing COVID-19 deaths.Scientific reports · 2020Observational
- Transmission-dynamics models for the SARS Coronavirus-2.American journal of human biology : the official journal of the Human Biology Council · 2020Review
- Article
- Influenza virus-related critical illness: prevention, diagnosis, treatment.Critical care (London, England) · 2019Review
- Influence of meteorological parameters in the seasonality of influenza viruses circulating in Northern Cameroon.Influenza and other respiratory viruses · 2019Article
- Development and validation of influenza forecasting for 64 temperate and tropical countries.PLoS computational biology · 2019Article
- Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
10 authors.
Funding
Abstract
backgroundThe association of influenza with meteorological variables in tropical climates remains controversial. Here, we investigate the impact of weather conditions on influenza in the tropics and factors that may contribute to this uncertainty.
methodsWe computed the monthly viral positive rate for each of the 3 circulating influenza (sub)types (ie, A/H1N1, A/H3N2, and B) among patients presenting with influenza-like illness (ILI) or severe acute respiratory infections (SARI) in 2 Ugandan cities (Entebbe and Kampala). Using this measure as a proxy for influenza activity, we applied regression models to examine the impact of temperature, relative humidity, absolute humidity, and precipitation, as well as interactions among the 3 influenza viruses on the epidemic dynamics of each influenza (sub)type. A full analysis including all 4 weather variables was done for Entebbe during 2007-2015, and a partial analysis including only temperature and precipitation was done for both cities during 2008-2014.
resultsFor Entebbe, the associations with weather variables differed by influenza (sub)type; with adjustment for viral interactions, the models showed that precipitation and temperature were negatively correlated with A/H1N1 activity, but not for A/H3N2 or B. A mutually negative association between A/H3N2 and B activity was identified in both Entebbe and Kampala.
conclusionOur findings suggest that key interactions exist among influenza (sub)types at the population level in the tropics and that such interactions can modify the association of influenza activity with weather variables. Studies of the relationship between influenza and weather conditions should therefore determine and account for co-circulating influenza (sub)types.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
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.