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. 2022 Dec;28(12):2425–2434. doi: 10.3201/eid2812.220215

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Emerging Infectious Diseases is a publication of the U.S. Government. This publication is in the public domain and is therefore without copyright. All text from this work may be reprinted freely. Use of these materials should be properly cited.

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Flowchart indicating serologic and PCR sampling for study of household transmission of SARS-CoV-2 from humans to pets, Washington and Idaho, USA. Of 119 dogs and 57 cats corresponding to 105 households that had completed surveys, PCR testing was complete for 94 dogs and 39 cats, and serologic testing was complete for 81 dogs and 32 cats. The remaining pets were not sampled because of safety concerns.