id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-261160-g92zhv19	Rowland, Raymond R.R	Lymphoid tissue tropism of porcine reproductive and respiratory syndrome virus replication during persistent infection of pigs originally exposed to virus in utero	2003-10-30		.txt	text/plain	6383	322	48	title: Lymphoid tissue tropism of porcine reproductive and respiratory syndrome virus replication during persistent infection of pigs originally exposed to virus in utero Even though PRRSV-specific antibody appears as early as 5 days post-infection and is followed by serum neutralizing activity and cell-mediated immunity Molitor, 1997, 1999; Rowland et al., 1999 Rowland et al., , 2001 persistently infected pigs can continue to shed virus. The purpose of this study was to further understand persistent infection in congenitally infected pigs by characterizing the course of clinical disease, sites of virus replication and the capacity to transmit virus in a group of pigs exposed to PRRSV in utero. Analysis of virus and antibody in blood and/or umbilical cords from the 28 live neonates showed that at least 20 or 74% were virus isolation (VI) or RT-PCR positive for PRRSV at the time of farrowing indicating that in utero infection was successful.	./cache/cord-261160-g92zhv19.txt	./txt/cord-261160-g92zhv19.txt