Non-Hodgkin's lymphoma is cancer of the lymphatic system's lymphocytes. It may cause anaemia and affect liver function. It is treated with radiotherapy.
Leptospirosis is an animal-borne bacterial infection which occurs in hot, wet weather and usually causes sudden fever, headaches, vomiting and diarrhoea.
Ross River virus (epidemic polyarthritis) is a mosquito-borne infection endemic to Australia and South Pacific islands. It causes rash, fever and arthritis.