Which animal groups carry the most zoonotic viruses?

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Domesticated Animals, Primates, Bats, and Rats Carry the Most Zoonotic Viruses

Domesticated animals, primates, bats, and rats are identified as the carriers of the highest proportion of zoonotic viruses. Research indicates that these animal groups collectively account for approximately 75 percent of the zoonotic viruses studied. This finding is significant in understanding the potential sources of emerging infectious diseases that can transmit to humans.
Identification of Key Animal Carriers

A comprehensive study examined over 140 viruses known to have transferred from animals to humans. By cross-referencing these viruses with the IUCN Red List of endangered species, researchers pinpointed the animal groups most frequently associated with zoonotic diseases. The data specifically highlights domesticated animals, primates, bats, and rats as carrying the largest share of these viruses.
Link Between Exploitation and Spillover Risk

The research further established a strong correlation between species being threatened and the risk of disease spillover. When animal species face threats from over-consumption and habitat loss, the likelihood of viruses transferring to human populations increases. This suggests that human activities that exploit wildlife and degrade natural habitats are primary drivers behind disease spillover events.
Broader Implications for Emerging Infectious Diseases

The findings underscore the critical link between human actions, biodiversity loss, and the increased risk of emerging infectious diseases. Activities such as deforestation, land conversion for agriculture, and urban development alter landscapes and intensify contact between humans and wildlife. These conditions create an environment conducive to the spillover of viruses from animals to humans, as exemplified by the Covid-19 pandemic.

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Which animal groups carry the most zoonotic viruses?

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