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. 2021 Jun 3;4:686. doi: 10.1038/s42003-021-02232-9

Table 4.

Cross-tabulated results for combinations of two diagnostic tests K9 dogs and RT_PCR for diagnosis of COVID-19 in the human population (n = 3134) in UAE.

Population based on location Tests combinations (Test 1: K9; Test 2: RT-PCR) Total
+ + + − − + − −
Asia (pop 1) 12 18 3 2895 2928
Africa (pop 2) 3 0 0 203 206
Total 15 18 3 3098 3134