It's amusing to see heavy smokers and people who drink excessive amounts of alcohol, but won't get vaccinated because they are "concerned for their health". My god, how have we become that stupid.
Get the bloody vaccine ya big girls blouses.
Qantas aircraft are private property, any owner of private property is free to impose any conditions they like. If you don;t like the conditions, you don't have to enter.
At the very least, learn how the dam things work before sprouting intellectual jibba jabber.
http://www.violinet.org/docs/undvacc.pdf