What diseases can lead to visa refusal?

The health refusal of Australian immigrants has little to do with those diseases, but with whether the applicant will bring a burden to Australia's public health care.

Australian public health care, public health care money is the money of ordinary Australian taxpayers. People who want to immigrate have never paid taxes in Australia. If they get sick, they need to spend taxpayers' money to treat them. Therefore, Australian immigrants will take whether it will bring a burden to public health care as one of the immigration conditions.

For example, if you have a serious illness, but you buy long-term private medical insurance and the insurance company pays for your treatment, then your illness will not affect your immigration.

On the contrary, if your illness is not serious, but you need public medical care to pay for your treatment after emigration, then you may not be approved to emigrate.