Seroprevalence of porcine respiratory coronavirus infection in Spanish breeding sows

No significant differences were found in the prevalence rates among the three farm types; there was, however, a highly significant correlation between increasing farm size and increasing within-farm seropositivity. pmc-status-qastatus 0 pmc-status-live yes pmc-status-embargo no pmc-status-released yes pmc-prop-open-access yes pmc-prop-olf no pmc-prop-manuscript no pmc-prop-legally-suppressed no pmc-prop-has-pdf yes pmc-prop-ha

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