Table 1.

Animals screened for the presence of circulating Midichloria DNA

Mammalian host	Region or origin	Sample size	No. of positive (%)
Dog (Kpa)	Sicilia	62	18 (29%)
Dog (K1b)	Molise	4	1 (25%)
Dog (K3b)	Campania	7	1 (14%)
Dog (K14b)	Campania	13	0 (0%)
Horse (NIc)	Lazio	46	5 (11%)
Sheep (NIc)	Lombardia	11	1 (9%)
Cattle (NIc)	Lombardia	13	0 (0%)
Cattle (Id)	Lombardia	30	0 (0%)
Dog (control group)	Experimental animalse	20	0 (0%)

^adogs from a kennel in the Pantelleria Island (Kp), Sicilia; ^bkennel code as indicated in Table 2; ^canimals from non-intensive (NI) breeding farms; ^danimals from an intensive (I) breeding farm; ^eanimals from a previous experimental study [14].