Here standard policy is to wear a mask whenever you are in a public place, including using public transport.

Testing for Covid-19 infection is is free here. If somebody is infected then getting isolated is important as well as tracing all their contacts.

The virus does not appear by magic. Health professionals in the states follow the science, which is epidemiology, virology and immunology and advise the states accordingly.

Whenever something unexpected like Covid-19 happens conspiracy theorists get excited; they are ignored.