Table 3.

Timing of detection for T. gondii IgG seroconversion using indirect ELISA for primiparous ewes (n = 12) sampled across southern Australia between 2018 and 2020. The earliest detection of seroconversion is bolded

Ewe ID	Farm	Timing of foetal or lamb loss	T. gondii seroconversion status
			Pre-mating	Scan 1	Scan 2	Pre-lambing	Lamb marking
Seroconversion detected pre-mating
9463	13	Perinatal death	Positive	Positive	Positive	NA	Positive
Seroconversion first detected during pregnancy
18842	20	Late abortion/ perinatal lamb death	Negative	Positive	Positive	NA	Positive
18857	20	Perinatal death	Negative	Positive	Positive	NA	Positive
3479	3	Late abortion/ perinatal lamb death	Negative	Positive	Negative	Negative	Positive
12114	12	Mid Abortion (scan 2 – scan 3)	Negative	Negative	Positive	NA	NA
13091	7	Late abortion a (scan 3 – pre-lambing)	Negative	Negative	Negative	Positive	NA
18121	21	Perinatal death	Negative	Negative	Negative	Positive	Positive
Seroconversion first detected at marking
16527	10	Perinatal death	Negative	Negative	Negative	NA	Positive
16528	10	Perinatal death	Negative	Negative	Negative	NA	Positive
17152	15	Perinatal death	Negative	Negative	Negative	Negative	Positive
18190	22	Perinatal death	Negative	Negative	Negative	Negative	Positive
23364	29	Raised twins	Negative	NA	NA	Negative	Positive

NA Not available for testing as the ewe was not present for sampling or had been removed from the study flock after abortion was confirmed

^aconfirmed late abortion based on observation of purulent vaginal discharge and opportunistic transabdominal ultrasound at the pre-laambing visit