SARS-CoV-2 infections among animals in US zoological institutions resulted primarily from human-to-animal transmission without evidence of sustained evolution in animals (2020–2023)

Key Points

The aim is to assess the transmission of SARS-CoV-2 infections from humans to animals in zoological institutions and understand its implications.
Analysis of SARS-CoV-2 infection cases in animals from various US zoological facilities
Identification of transmission pathways and potential outbreaks
Review of public health implications related to zoonotic diseases
Infections primarily resulted from human-to-animal transmission
No evidence of sustained evolution of the virus in animal populations
Findings underscore the importance of monitoring and mitigating disease spread among vulnerable species

Answers are grounded in this paper and cite their sources.

Observations reveal human-to-animal transmission of SARS-CoV-2 in zoological institutions, suggesting population health risks.

Mitigating emerging infectious disease threats in these facilities is critical for protecting vulnerable animal populations and public health.

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Cristiano et al. (2026) studied this question.

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