Table 4 Summary of results from volunteers who tested positive on the rapid antigen test (RAD) and were sniffed by the sniffer dogs in the field work, grouped based on being sniffed by a single dog (one) or multiple dogs (multiple).

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

Number of sniffer dogs examining each volunteer

Dog

Correct choice rates

One

HOPE

n. correct choices/total positive = 82% (13/16)

n. incorrect choices/total positive = 18% (3/16)

One

IRIS

n. correct choices/total positive = 100% (1/1)

n. incorrect choices/total positive = 0% (0/1)

One

NIM

n. correct choices/total positive = 100% (10/10)

n. incorrect choices/total positive = 0% (0/10)

One

CHAOS

n. correct choices/total positive = 100% (1/1)

n. incorrect choices/total positive = 0% (0/1)

Volunteer code

Number of sniffer dogs examining each volunteer

Correct sniffer dog

dmmau

Multiple

NIM

HOPE

dsgua

Multiple

NIM

HOPE

drsof

Multiple

HOPE

IRIS

NIM

CHAOS

dae

Multiple

NALA

HOPE

NIM

drb

Multiple

NALA

HOPE

dem

Multiple

NALA

IRIS

NIM

dgm

Multiple

NALA

IRIS

dibna

Multiple

HOPE

IRIS

dpessa

Multiple

IRIS

CHAOS

fnid2

Multiple

NALA

HOPE

fnif

Multiple

HOPE

NIM

  1. Names of sniffer dogs with wrong choices are displayed in bold.