ArticleInfluenza and other respiratory viruses2016
Divergent seasonal patterns of influenza types A and B across latitude gradient in Tropical Asia.
Article in Influenza and other respiratory viruses, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers.
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Who cites it
32 citing papers in PubMed.
- Efficacy of live attenuated and inactivated influenza vaccines among children in rural India: A 2-year, randomized, triple-blind, placebo-controlled trial.PLoS medicine · 2021Trial
- Challenges in conducting a community-based influenza vaccine trial in a rural community in northern India.Human vaccines & immunotherapeutics · 2018Trial
- Year-round influenza immunisation during pregnancy in Nepal: a phase 4, randomised, placebo-controlled trial.The Lancet. Infectious diseases · 2017Trial
- Trial
- Rethinking COVID-19 seasonality: A summer respiratory virus in the tropics, contrast to influenza.World journal of virology · 2026Review
- Epidemiology of 3 Vaccine-Preventable Infectious Diseases Within US Immigration Detention Centers.JAMA network open · 2025Article
- Seasonality of Influenza and Optimizing Timing of Vaccination: Systematic Review and Meta-Analysis.Cureus · 2025Review
- Review
- Impact of PMEnvironmental science and pollution research international · 2023Article
- Increased genetic variation of A(H3N2) virus from influenza surveillance at the end of the 2016/2017 season for Shanghai port, China.Scientific reports · 2022Article
- Epidemiological and Clinical Characteristics of Influenza Outbreaks Among Children in Chongqing, China.Frontiers in public health · 2022Article
- The Relationship Between the Global Burden of Influenza From 2017 to 2019 and COVID-19: Descriptive Epidemiological Assessment.JMIR public health and surveillance · 2021Article
- Observational
- Influenza in temperate and tropical Asia: a review of epidemiology and vaccinology.Human vaccines & immunotherapeutics · 2020Review
- The effects of age on clinical characteristics, hospitalization and mortality of patients with influenza-related illness at a tertiary care centre in Malaysia.Influenza and other respiratory viruses · 2020Article
- Characteristics of Seasonal Influenza Virus Activity in a Subtropical City in China, 2013-2019.Vaccines · 2020Article
- Outbreak of acute undifferentiated febrile illness in Kathmandu, Nepal: clinical and epidemiological investigation.BMC infectious diseases · 2020Article
- Forecasting seasonal influenza-like illness in South Korea after 2 and 30 weeks using Google Trends and influenza data from Argentina.PloS one · 2020Article
- Article
- Overview of seasonal influenza and recommended vaccine during the 2016/2017 season in Nepal.Heliyon · 2020Article
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4 authors.
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No grant is acknowledged in the PubMed record.
Abstract
introductionInfluenza circulation in tropics and subtropics reveals a complex seasonal pattern with year-round circulation in some areas and biannual peaks in others.
methodsWe analyzed influenza surveillance data from nine countries around southern and southeastern Asia spanning latitudinal gradient from equatorial to temperate zones to further characterize influenza type-specific seasonality in the region. We calculated proportion of positives by month out of positives during that year and adjust for variation in samples tested and positivity in these countries.
resultsInfluenza A epidemics were identified between November and March during winters in areas lying above 30°N latitude, during monsoon months of June-November in areas between 10° and 30°N latitude, and no specific seasonality for influenza A virus circulation in areas lying closer to the equator. Influenza B circulation coincided with influenza A circulation in areas lying above 30°N latitude; however, in areas south of 30°N Asia, influenza B circulated year round at 3-8% of annual influenza B positives during most months with less pronounced peaks during post-monsoon period.
conclusionEven though influenza B circulates round the year in most areas of the tropical regions of southern and southeastern Asia, the most appropriate time for influenza vaccination using the most recent WHO recommended vaccine would be prior to the monsoon season conferring protection against influenza A and B peaks.
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