Ecological interactions that cross domains of life have major impacts on ecosystems and human health. Although the coronavirus disease 2019 (COVID-19) pandemic makes this point with destructive clarity, it is clear that zoonotic pathogens pose a standing threat to our species as demonstrated by Ebola, Middle East respiratory syndrome (MERS), and severe acute respiratory syndrome (SARS). Other species experience similar pandemics and are both sources of, and sensitive to, shared pathogens.
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