Nevertheless, given the low dose of approximately 10–15 organisms required to infect humans [37], secretions and excretions from the UGT and gastrointestinal tracts of koalas should still be considered to represent a plausible risk for C. burnetii exposure for those in close contact with these animals and involved in activities such as cage cleaning or collecting UGT swabs for routine diagnostics (e.g., diagnosis of chlamydia or other infections). The gene discussed is SLC35A2; the disease is chlamydia trachomatis infectious disease.