Chinese,Indian and Nepalese students alone brought in $2.4 billion,according to a 2019 audit of NSW universities,before the coronavirus pandemic prevented student arrivals.
Hands are often responsible for transferring pathogens from one place to another,so items that people often touch are at greatest risk of being contaminated.
The NSW epidemiologist whose work inspired the Trump administration's coronavirus response has backed calls for more Australians to work from home.
American officials said the advice would cover how to minimise the risk of contracting the disease in the home,the workplace and while travelling.
Drinking water contains the highest amount of tiny plastics,as well as shellfish,beer and salt,according to a new Australian study.