Figure 1From: The assessment of efficacy of porcine reproductive respiratory syndrome virus inactivated vaccine based on the viral quantity and inactivation methodsPRRSV-specific IDEXX ELISA S/P ratio with 3 shots of BEI-inactivated PRRSV experimental inactivated vaccine, according to viral titers. Vaccines were inoculated 3 times (days 0, 14, and 28).Back to article page