Reintroduced malaria in Queensland, Australia during the Second World War.

A malaria epidemic arose in 1942 in Cairns, which was the evacuation point from the Japanese offensive in New Guinea. Health authorities made great efforts to suppress parasites in transiting soldiers and to position them south of 19°S latitude away from most vectors. Queensland experienced some scattered locally transmitted epidemics in 1943-1944 but by 1945 malaria transmission had largely been eliminated.