Surveillance for SARS-CoV-2 in Norway Rats (Rattus norvegicus) from Southern Ontario

Table 1

Results of confirmatory plaque reduction neutralization testing (PRNT) for the 11 presumptive surrogate virus neutralization test positive thoracic cavity fluid samples collected from rats submitted by pest control companies in Southern Ontario.

Rat identification no.	Date of collection	City	Land use category	PRNT70 titre
277	17-Oct-19	Hamilton	Mixed	—
173	5-Dec-19	Windsor	Industrial	—
216	10-Dec-19	Windsor	Industrial	—
217	16-Dec-19	Windsor	Industrial	—
231	10-Jan-20	Windsor	Residential	1 : 40
188	3-Feb-20	Windsor	Residential	—
230	24-Feb-20	Windsor	Institutional	—
192	1-Apr-20	Windsor	Residential	—
227	20-May-20	Windsor	Residential	1 : 320
251	1-Jul-20	Hamilton	Mixed	—
247	11-Nov-20	Burlington	Residential	—