Host _gates_from_host Infection _gates_to_infection _gates_from_infection Clinical Symptoms _gates_to_clinical_symptoms Animals, Domestic _gates_from_animals__domestic Environment _gates_to_environment _gates_from_environment Humans _gates_to_humans _gates_from_humans Symptomology (CNS/Ocular/Congenital) _gates_to_symptomology__cns_ocular_congenital_ Disease Reservoirs _gates_from_disease_reservoirs Transmission to Human _gates_to_transmission_to_human _gates_from_transmission_to_human +12 more