The role of pets in SARS-CoV-2 transmission: an exploratory analysis

Abstract

Purpose: There is evidence that humans can transmit SARS-CoV-2 to cats and dogs. However, there is no evidence that they can transmit it back to humans or play any role in SARS-CoV-2 transmission. Here, we present an exploratory analysis on that matter. Methods: We conducted a case–control study with participants with flu-like symptoms seeking care at a primary healthcare unit to be tested for COVID-19. They were asked if they owned pet cats and/or dogs in their residences, and this variable was evaluated as exposure. Results: The odds ratio of “having dogs and/or cats in the residence” was 1.29 (95% CI 1.08–1.54) of “having only dogs and no cats” was 1.26 (1.05–1.52), and “no dogs and only cats” was 1.29 (0.95–1.75). Conclusion: Having a cat/dog in the house can affect the risk of infection by SARS-CoV-2.