This paper examines the timing of one-time fluctuations in births subsequent to the 1918 influenza pandemic in Madras (now Chennai), India. After seasonally decomposing key demographic aggregates, we identified abrupt one-time fluctuations in excess births, deaths, and infant deaths. We found a contemporaneous spike in excess deaths and infant deaths and a 40-week lag between the spike in deaths and a subsequent deficit in births. The results suggest that India experienced the same kind of short-term postpandemic "baby bust" that was observed in the United States and other countries. Identifying the mechanisms underlying this widespread phenomenon remains an open question and an important topic for future research.
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http://dx.doi.org/10.1111/irv.13355 | DOI Listing |
Philos Trans R Soc Lond B Biol Sci
January 2025
School of Biodiversity, One Health & Veterinary Medicine, University of Glasgow, Glasgow G61 1QH, UK.
Birds have evolved seasonal adaptations in multiple aspects of the innate and adaptive immune systems. Seasonal immunological adaptations are crucial for survival in harsh environmental conditions and in response to increased prevalence of acute and chronic diseases. Similar to other vertebrates, birds exhibit remarkable plasticity in cytokine production, chemotaxis, phagocytosis and inflammation across the year.
View Article and Find Full Text PDFPhilos Trans R Soc Lond B Biol Sci
January 2025
Department of Infectious Disease, Imperial College London, London SW7 2AZ, UK.
The within-host environment changes over circadian time and influences the replication and severity of viruses. Genetic knockout of the circadian transcription factors CRYPTOCHROME 1 and CRYPTOCHROME 2 (/; CKO) leads to altered protein homeostasis and chronic activation of the integrated stress response (ISR). The adaptive ISR signalling pathways help restore cellular homeostasis by downregulating protein synthesis in response to endoplasmic reticulum overloading or viral infections.
View Article and Find Full Text PDFEpidemics
January 2025
Institute of Evolutionary Medicine, University of Zurich, Switzerland; Swiss School of Public Health SSPH+, Zurich, Switzerland; Crisis Competence Center, University of Zurich, Switzerland. Electronic address:
Background: Our study aims to enhance future pandemic preparedness by integrating lessons from historical pandemics, focusing on the multidimensional analysis of past outbreaks. It addresses the gap in existing modelling studies by combining various pandemic parameters in a comprehensive setting. Using Zurich as a case study, we seek a deeper understanding of pandemic dynamics to inform future scenarios.
View Article and Find Full Text PDFScience
January 2025
Maria D. Van Kerkhove is a director at the World Health Organization, leading the Department of Epidemic and Pandemic Threat Management, and serves as the COVID-19 Technical Lead and Emergency Manager in the Health Emergencies Programme, Geneva, Switzerland.
Just over 5 years ago, on New Year's Eve 2019, the World Health Organization (WHO) became aware of the first cases of pneumonia of unknown etiology in Wuhan, China. A massive global infectious disease storm was already brewing-one that would shut down the world, with profound economic, social, and political impacts that still reverberate today. It's understandable that governments and individuals may want to forget that the COVID-19 pandemic ever happened, but such collective amnesia prevents humanity from being ready for the next pandemic.
View Article and Find Full Text PDFViruses
December 2024
Wadsworth Center, David Axelrod Institute, New York State Department of Health, Albany, NY 12208, USA.
A historical perspective of more than one hundred years of influenza surveillance in New York State demonstrates the progression from anecdotes and case counts to next-generation sequencing and electronic database management, greatly improving pandemic preparedness and response. Here, we determined if influenza virologic surveillance at the New York State public health laboratory (NYS PHL) tests sufficient specimen numbers within preferred confidence limits to assess situational awareness and detect novel viruses that pose a pandemic risk. To this end, we analyzed retrospective electronic data on laboratory test results for the influenza seasons 1997-1998 to 2021-2022 according to sample sizes recommended in the Influenza Virologic Surveillance Right Size Roadmap issued by the Association of Public Health Laboratories and Centers for Disease Control and Prevention.
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