Not, usually, that is why it was a stupid question. Bubonic Plague is bacterial and treated with the other scientifically developed life saver, antibiotics. Just like TB and many other killer infections.
Embarrassing is probably the best, safer, not so much because my money is still in the US and they are trying to steal it. It is an epic disaster that will not be better with Vance.
Any time your success is based on under the table payments to government officials, it is dodgy. No idea how it works in Oz but in LOS it is an often overlooked occurrence.
You should not need an agent to get an Aussie visa but who knows. I don't even try in the US.