Figure 2

Bacterial isolation, somatic cell count and clinical response following challenge with S. uberis 0140J and EF20 in dairy cattle. Geometric mean value obtained after challenge of animals with either S. uberis strain 0140J (n = 10) or the EF20 (n = 10). (a) Bacterial recovery of S. uberis at each milking following challenge, measured by cfu/ml of milk (b) Cellular influx at each milking following S. uberis challenge, measured by somatic cell count/ml of milk (c) Combined clinical scores from clinical manifestations following S. uberis challenge. Data is represented as the arithmetic mean of clinical scores given for the appearance of the quarter and appearance of the milk as previously described [7].