Fig. 4From: Effectiveness of two intramuscular combined vaccines for the control of Mycoplasma hyopneumoniae and porcine circovirus type 2 in growing pigs: a randomized field trialPercentage of M. hyopneumoniae seropositive pigs per treatment group and sampling age using Idexx HerdChek M. hyopneumoniae ELISA. In this graph, seropositivity is defined as S:P ratio > 0.4Back to article page