Table 4: Geometric mean of positive antibody titers (proportion of positive samples) against PRRSV EU, PRRSV US, and PCV2, at arrival and at the end of study II.

Facility12
UnitABC
Status of herd PMWS affectedPMWS-freePMWS-freePMWS-free

PRRS EU
 Arrival 79.2 ( )50.0 ( )50.0 ( )50.0 ( )
 End135.4 ( )123.7 ( )146.2 ( )n.a.* ( )

PRRS US
 Arrival326.9 ( )n.a. ( )*n.a. ( )*n.a. ( )*
 End385.6 ( )503.3 ( )539.0 ( )n.a. ( )*

PCV2
 Arrival10887.2 ( )159.3 ( ) 267.0 ( )906.0 ( )
 End177720.6 ( )54697.9 ( )13704.7 ( )31.9 ( )

 *n.a.: not applicable, because all titres were 0.