Table 3 Main biological characteristics of samples and experimental phase (test/retest) associated to discrepancies between SARS-CoV-2 RT-PCR and the response from the three dogs.

From: Sniffer dogs performance is stable over time in detecting COVID-19 positive samples and agrees with the rapid antigen test in the field

Dog

Sample id

RT-PCR diagnosis

Phase

Participant gender

Participant age (yrs)

Vaccination

Otto

P_129

Positive

Test

F

87

Yes

Nala

P_121

Positive

Test

F

74

No

Otto

I187

Negative

Test

F

50

Yes

Nala

I170

Negative

Test

F

66

Yes

Helix

P_121

Positive

Retest

F

74

No

Helix

P_139

Positive

Retest

M

85

Yes

Helix

P_113

Positive

Retest

F

69

Yes

Helix

L233

Positive

Retest

F

29

No

Otto

P_151

Positive

Retest

M

61

Yes

Helix

I99

Negative

Retest

M

61

Yes

Helix

L274

Negative

Retest

F

38

Yes

Helix

L75

Negative

Retest

M

60

No

Helix

L174

Negative

Retest

F

32

Yes

Otto

I382

Negative

Retest

F

31

Yes