Low transmission rates of Equine infectious anemia virus (EIAV) in foals born to seropositive feral mares inhabiting the Amazon delta region despite climatic conditions supporting high insect vector populations

Table 1 Age, breed, sample collection date and results of Group A foals evaluated for EIA

Foal	Breed	Age (months) prior to initial sample date	Date seropositivity of mare confirmed	Month/year of sample collection (foals)
				Jan/18		Mar/18		Jul/18		Nov/18		Jul/19		Jan/20
				ELISA	AGID	ELISA	AGID	ELISA	AGID	ELISA	AGID	ELISA	AGID	ELISA	AGID
24	Crossbreed	1	Jul/18	Neg	ND	ND	ND	Neg	ND	Neg	ND	Neg	ND	Neg	ND
28	Crossbreed	10	Jan/18	Neg	ND	ND	ND	Neg	ND	Neg	ND	Neg	ND	Neg	ND
45	Crossbreed	7	Jan/18	Neg	ND	Neg	Neg	Pos	Pos	ND	ND	ND	ND	ND	ND
46	Crossbreed	11	Jan/18	Neg	ND	ND	ND	Neg	ND	Neg	ND	ND	ND	ND	ND
78	Marajoara	7	Jan/18	Neg	ND	ND	ND	Neg	ND	Neg	ND	Neg	ND	Neg	ND
89	Crossbreed	6	Jan/18	Neg	ND	ND	ND	Neg	ND	Neg	ND	Neg	ND	Neg	ND
137	Crossbreed	7	Jan/18	Neg	ND	ND	ND	Neg	ND	Neg	ND	Neg	ND	Neg	ND
154	Marajoara	8	Jan/18	Neg	ND	ND	ND	Neg	ND	Neg	ND	Neg	ND	Neg	ND
155	Crossbreed	7	Jan/18	Neg	ND	ND	ND	Neg	ND	Neg	ND	Neg	ND	Neg	ND
158^a	Marajoara	7	Jan/18	Pos	Neg	ND	ND	Pos	Pos	ND	ND	ND	ND	ND	ND
165	Crossbreed	10	Jan/18	Neg	ND	ND	ND	Neg	ND	Neg	ND	Neg	ND	Neg	ND
196	Crossbreed	6	Jan/18	Neg	ND	ND	ND	Neg	ND	Neg	ND	Neg	ND	Neg	ND
200	Crossbreed	6	Jan/18	Neg	ND	ND	ND	Neg	ND	Neg	ND	Neg	ND	ND	ND
230	Crossbreed	1	Jan/18	Pos	Pos	ND	ND	Neg	ND	Neg	ND	Neg	ND	Neg	ND

Foot notes:
^a Foal 158 presented a positive result in ELISApgp45 and negative in AGID in Jan/2018 and in the following test it also became positive in AGID
ND Not done
─: Foal had not borned at time of sample collection

ISSN: 1746-6148