ArticleBMJ open2021
Cohort profile: Indian Network of Population-Based Surveillance Platforms for Influenza and Other Respiratory Viruses among the Elderly (INSPIRE).
Article in BMJ open, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 1 of them a synthesis that pooled it.
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Who cites it
17 citing papers in PubMed, 1 synthesis or guideline pooled it, 16 citations in OpenAlex.
- Disease burden due to respiratory syncytial virus infection among under-5 children of India for 2020: a multiplicative model using meta-estimates.BMJ global health · 2025Pooled it
- Burden and risk factors of influenza-associated acute respiratory infections among older adults in India: a multicentric community-based surveillance (2018-2023).The Lancet regional health. Southeast Asia · 2026Article
- Burden of Influenza and Cost-Effectiveness Analysis of Introduction of an Influenza Vaccination Programme Among Older Adults in India.Influenza and other respiratory viruses · 2026Article
- Incidence, risk factors and viral aetiology of lower respiratory infections among older adults: a 5-year multicentric cohort study in India.BMJ open respiratory research · 2026Observational
- Monitoring influenza vaccination coverage among older adults: a rural cohort study, Rio Grande, 2017-2022.Epidemiologia e servicos de saude : revista do Sistema Unico de Saude do Brasil · 2026Article
- Resource utilisation and cost of hospitalisation with community-acquired pneumonia among older adults in India, 2018-2020.BMJ public health · 2025Article
- Adult vaccination in India: A rapid review of current status & implementation challenges.The Indian journal of medical research · 2024Review
- A vicious cycle of frailty and acute lower respiratory infection among community-dwelling adults (≥ 60 years): Findings from a multi-site INSPIRE cohort study, India.PLOS global public health · 2024Article
- Adverse outcomes in patients hospitalized with pneumonia at age 60 or more: A prospective multi-centric hospital-based study in India.PloS one · 2024Article
- Influenza vaccine: a review on current scenario and future prospects.Journal, genetic engineering & biotechnology · 2023Review
- Estimating the full health and economic benefits of current and future influenza vaccines.BMC medicine · 2023Article
- Article
- Need for a robust public health response to seasonal influenza in India.The Indian journal of medical research · 2023Article
- Cost of acute respiratory illness episode and its determinants among community-dwelling older adults: a four-site cohort study from India.BMJ public health · 2023Article
- Addressing Unmet Needs in Vaccination for Older Adults in the Asia Pacific: Insights from the COVID-19 Pandemic.Clinical interventions in aging · 2023Review
- Leveraging International Influenza Surveillance Systems and Programs during the COVID-19 Pandemic.Emerging infectious diseases · 2022Review
- Impact of COVID-19 on the Changing Patterns of Respiratory Syncytial Virus Infections.Infectious disease reports · 2022Review
Corrections and comments
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Authors and funding
19 authors at 6 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeWe describe here a multicentric community-dwelling cohort of older adults (
participantsThe four sites of this cohort are in northern (Ballabgarh), southern (Chennai), eastern (Kolkata) and western (Pune) parts of India. We enrolled 5336 participants across 4220 households and began surveillance in July 2018 for viral respiratory infections with additional participants enrolled annually. Trained field workers collected data about individual-level and household-level risk factors at enrolment and quarterly assessed frailty and grip strength. Trained nurses surveilled weekly to identify acute respiratory infections (ARI) and clinically assessed individuals to diagnose acute lower respiratory infection (ALRI) as per protocol. Nasal and oropharyngeal swabs are collected from all ALRI cases and one-fifth of the other ARI cases for laboratory testing. Cost data of the episode are collected using the WHO approach for estimating the economic burden of seasonal influenza. Handheld tablets with Open Data Kit platform were used for data collection. FINDINGS TO DATE: The attrition of 352 participants due to migration and deaths was offset by enrolling 680 new entrants in the second year. All four sites reported negligible influenza vaccination uptake (0.1%-0.4%), low health insurance coverage (0.4%-22%) and high tobacco use (19%-52%). Ballabgarh had the highest proportion (54.4%) of households in the richest wealth quintile, but reported high solid fuel use (92%). Frailty levels were highest in Kolkata (11.3%) and lowest in Pune (6.8%). The Chennai cohort had highest self-reported morbidity (90.1%). FUTURE PLANS: The findings of this cohort will be used to inform prioritisation of strategies for influenza and RSV control for older adults in India. We also plan to conduct epidemiological studies of SARS-CoV-2 using this platform.
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