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Volume 26, Number 12—December 2020
Research Letter

SARS-CoV-2 in Quarantined Domestic Cats from COVID-19 Households or Close Contacts, Hong Kong, China

Vanessa R. Barrs1Comments to Author , Malik Peiris1, Karina W.S. Tam, Pierra Y.T. Law, Christopher J. Brackman, Esther M.W. To, Veronica Y.T. Yu, Daniel K.W. Chu, Ranawaka A.P.M. Perera, and Thomas H.C. Sit
Author affiliations: City University of Hong Kong, Hong Kong, China (V.R. Barrs); The University of Hong Kong, Hong Kong (M. Peiris, D.K.W. Chu, R.A.P.M. Perera); Government of the Hong Kong Special Administrative Region, Hong Kong (K.W.S. Tam, P.Y.T. Law, C.J. Brackman, E.M.W. To, V.Y.T. Yu, T.H.C. Sit)

Main Article

Table

Results of reverse transcription PCR for detection of severe acute respiratory syndrome coronavirus 2 in nasal, oral, rectal, and fecal swab specimens for 6 cats, Hong Kong, China, 2020*

Animal breed/age, y/sex
Date tested
E gene, cutoff <36
RdRP gene, cutoff <40
NSP14 gene, cutoff <40
NP gene, cutoff <40
NSP16 gene, cutoff <40
M gene
N
O
R
Fe
N
O
R
Fe
N
O
R
Fe
N
O
R
Fe
N
O
R
Fe
N
O
R
Fe
DSH/7/F Mar 30 21.3 22.9 33.0 ND 32.0 32.0 38.9 ND 26.8 29.6 38.0 ND 26.4 29.3 38.0 ND 27.4 32.3 38.9 ND 26.0 28.8 36.9 ND
Apr 1 35.5 26.7 Neg ND Neg 35.5 Neg ND Neg 30.6 Neg ND Neg 31.7 Neg ND Neg 30.5 Neg ND 38.6 29.6 Neg ND
Apr 3 37.3 37.1 Neg ND Neg Neg Neg ND Neg Neg Neg ND 39.9 Neg Neg ND Neg Neg Neg ND Neg Neg Neg ND
Apr 6 Neg 35.9 Neg Neg Neg Neg Neg Neg ND Neg ND ND ND Neg ND ND ND Neg ND ND ND Neg ND ND
Apr 9 38.6 Neg Neg Neg Neg Neg Neg Neg 38.4 ND ND ND Neg ND ND ND Neg ND ND ND Neg ND ND ND
Apr 14 Neg Neg Neg Neg Neg Neg Neg Neg Neg Neg Neg Neg Neg Neg Neg Neg Neg Neg Neg Neg Neg Neg Neg Neg

Apr 15
Neg
Neg
Neg
ND

Neg
Neg
Neg
ND

Neg
Neg
Neg
ND

Neg
Neg
Neg
ND

Neg
Neg
Neg
ND

Neg
Neg
Neg
ND
DSH/3/M Jul 13 Neg Neg Neg 37.2 Neg Neg Neg Neg ND ND ND Neg ND ND ND 37.2 ND ND ND 40.0 ND ND ND 39.0
Jul 14 Neg Neg Neg ND Neg Neg Neg ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND
Jul 15 Neg 37.3 Neg 36.2 Neg Neg Neg Neg ND Neg ND Neg ND Neg ND Neg ND Neg ND Neg ND Neg ND Neg
Jul 17 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND
Jul 20 Neg Neg Neg ND Neg Neg Neg ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND
Jul 21 ND ND ND Neg ND ND ND Neg ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND
Jul 23 Neg Neg Neg ND Neg Neg Neg ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND

Jul 24
ND
ND
ND
Neg

ND
ND
ND
ND

ND
ND
ND
ND

ND
ND
ND
ND

ND
ND
ND
ND

ND
ND
ND
ND
ASH/13/M Jul 21 Neg 22.0 Neg ND Neg 27.3 Neg ND Neg 31.0 Neg ND Neg 30.7 Neg ND ND 31.6 ND ND ND 30.3 ND ND
Jul 24 Neg 29.0 Neg ND Neg 34.9 Neg ND ND 34.7 ND ND ND 34.9 ND ND ND ND ND ND ND ND ND ND
Jul 27 ND ND ND Neg ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND
Jul 30 Neg Neg Neg Neg Neg Neg Neg Neg ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND

Aug 4
Neg
Neg
Neg
ND

Neg
Neg
Neg
ND

ND
ND
ND
ND

ND
ND
ND
ND

ND
ND
ND
ND

ND
ND
ND
ND
DSH/2/F Jul 28 Neg Neg 34.2 32.7 Neg Neg 39.5 34.5 ND ND 36.4 35.5 ND ND 37.5 36.9 ND ND ND ND ND ND ND ND
Aug 4 Neg Neg Neg Neg Neg Neg Neg Neg ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND

Aug 7
Neg
Neg
Neg
Neg

Neg
Neg
Neg
Neg

ND
ND
ND
ND

ND
ND
ND
ND

ND
ND
ND
ND

ND
ND
ND
ND
SSH/5/M Jul 31 Neg 26.8 Neg Neg Neg 33.1 Neg Neg Neg 32.7 Neg ND Neg 29.7 Neg ND ND ND ND ND ND ND ND ND
Aug 4 34.6 35.3 36.5 32.7 40.0 Neg Neg 37.4 Neg Neg Neg 37.0 37.3 37.9 Neg 34.1 ND ND ND ND ND ND ND ND

Aug 11
Neg
Neg
Neg
Neg

Neg
Neg
Neg
Neg

ND
ND
ND
ND

ND
ND
ND
ND

ND
ND
ND
ND

ND
ND
ND
ND
DSH/5/F Aug 4 Neg 36.0 Neg ND ND 40.0 ND ND ND 37.2 ND ND ND Neg ND ND ND ND ND ND ND ND ND ND
Aug 11 Neg Neg Neg Neg Neg Neg Neg Neg ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND
Aug 13 Neg Neg Neg ND Neg Neg Neg ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND

*Values are cycle thresholds. Values in bold are positive or equivocal results greater than the cutoff value. ASH, American shorthair; DSH, domestic shorthair; E, envelope; Fe, fecal; N, nasal; Neg negative; ND, not determined; NP, nucleoprotein; NSP, nonstructural protein; O, oral; R, rectal; rectal; RdRp, RNA-dependent RNA polymerase; SSH, Scottish shorthair.

Main Article

1These authors contributed equally to this article.

Page created: September 10, 2020
Page updated: November 19, 2020 1:29 PM EST
Page reviewed: November 19, 2020 1:29 PM EST
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.
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