Reviewed by Danielle Ellis, B.Sc.Nov 3 2023 Four types of animal-to-human Infections have been increasing at an "exponential rate," amid a general pattern of increasingly larger and more frequent 'spillover' epidemics, finds an analysis of 60 years of historical epidemiological data, published in the open access journal BMJ Global Health.
But the implications for future global health are difficult to characterise, given limited historical data on the annual frequency and severity of zoonotic spillover over time, they add. The researchers focused on Filoviruses , SARS Coronavirus 1, Nipah virus, and Machupo virus, which causes Bolivian hemorrhagic fever, because of their potential to pose a significant risk to public health and economic or political stability.
Their analysis, which excluded the COVID-19 pandemic, shows that the number of spillover events and reported deaths attributable to these four groups of viruses have been increasing by almost 5% and 9%, respectively, every year between 1963 and 2019.
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