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Kinetics of observed infectionsin individual contact pigsfor groups CD7, CD14,CD21 and CD28. (a) Blood viral genome load (b) Total antibodies (c) Viral genome load in nasal swabs. The qualifications as low, medium or high positive are based on the values of the 33rd and 66th percentiles of the distribution of relative genome load and the S/P ratio for total antibodies.
