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. 2024 Jun;96(6):e29737.
doi: 10.1002/jmv.29737.

Zoonotic spillover and extreme weather events drive the global outbreaks of airborne viral emerging infectious diseases

Zekun Wang  1 , Shaojun Pei  2 , Haoliang Cui  2 , Jianyi Zhang  2 , Zhongwei Jia  2   3   4   5
Affiliations

Zoonotic spillover and extreme weather events drive the global outbreaks of airborne viral emerging infectious diseases

Zekun Wang et al. J Med Virol. 2024 Jun.

Abstract

Outbreaks of airborne viral emerging infectious diseases (EIDs) cause an increasing burden on global public health, particularly with a backdrop of intensified climate change. However, infection sources and drivers for outbreaks of airborne viral EIDs remain unknown. Here, we aim to explore the driving mechanisms of outbreaks based on the one health perspective. Outbreak information for 20 types of airborne viral EIDs was collected from the Global Infectious Disease and Epidemiology Network database and a systematic literature review. Four statistically significant and high-risk spatiotemporal clusters for airborne viral EID outbreaks were identified globally using multivariate scan statistic tests. There were 112 outbreaks with clear infection sources, and zoonotic spillover was the most common source (95.54%, 107/112). Since 1970, the majority of outbreaks occurred in healthcare facilities (24.82%), followed by schools (17.93%) and animal-related settings (15.93%). Significant associations were detected between the number of earthquakes, storms, duration of floods, and airborne viral EIDs' outbreaks using a case-crossover study design and multivariable conditional logistic regression. These findings implied that zoonotic spillover and extreme weather events are driving global outbreaks of airborne viral EIDs, and targeted prevention and control measures should be made to reduce the airborne viral EIDs burden.

Keywords: emerging infectious diseases; extreme weather events; global health; one health; outbreaks; zoonotic spillover.

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