For the non-vaccinated group, four koalas out of 21 (19%) had a load that increased at the 6-month time point compared to the time point 0 [2/21 koalas increased at both ocular and UGT sites (C11 and C13), and three new infections (C6, C11 and C13; qPCR load were below detection level (BDL) at time point 0)]. The gene discussed is SLC35A2; the disease is infection.