Four factors were included in the GEE model for C. burnetii seropositivity: age of the cattle (OR: 1.01; CI95%: 1.006–1.014), feeding of calves with milk replacers (OR: 1.94; CI95%: 1.1–3.3), bovine respiratory syncytial virus seropositivity (OR:1.54; CI95%: 1.1–2.3), and disinfection of the umbilical cord (OR: 0.60; CI95%: 0.4–0.9).