Table 1.

Respiratory pathogens present during sampling for PRRSV detection and historical clinical and laboratory records

Location	Production system	Farm Size	Number of sows	Associated to isolates from 2019	Associated to earlier PRDC reports in farms
				Pathogens detected	First description of PRDCa	Pathogens associated confimed by lab
Cartago	Breeders	Large	3500	Haemophilus spp-Porcine circovirus 2 (PCV2)	1993	PRRSV and PCV2
Puntarenas	Breeders	Medium	225	Glaesserella parasuis and Actinobacillus pleuropneumoniae (APP) Influenza	1996, 2018	PRRSV and PCV2
Puriscal	Breeders	Medium	200	Mycoplasma spp -APP	2015	PRRSV, APP, Mycoplasma spp
San Ramon	Breeders	Medium	190	Glaesserella parasuis, Mycoplasma spp - PCV2	2015	PRRSV and PCV2
San Ramon	Breeders	Medium	240	Mycoplasma spp -APP	2015	PRRSV and PCV2
Santa Barbara	Breeders	Medium	220	Mycoplasma spp -APP- PCV2	2002, 2015	(2002: PRRSV and Glaesserella parasuis) (2015: PRRSV and PCV2)

^a Post-weaning Respiratory Disease Complex (PRDC), first description and outbreaks