Figure 2

Occurrence of seroconversions against C. burnetii during a longitudinal study in intensively-reared goats. The white vertical bars represent primary immune response to presumed first exposure in goats. The primary immune responses occurred soon after IgG phase 1 colostrum-derived antibodies had waned; they were the first immune responses detected in goats that had no IgG phase 1 colostrum-derived antibodies. The vertical grey bars represent secondary seroconversions mounted following seroreversion from primary seroconversions. The horizontal white bars on the top of the graph represent the kidding seasons. Colostrum was fed at birth (C) and (E) is the median point at which IgG phase 1 and 2 antibodies detected soon after feeding colostrum waned. (W) corresponds to the target weaning age while (B) is the target breeding age.