Prime Minister Scott Morrison announced stricter measures for all Australians in an effort to slow the spread of coronavirus in a press conference on Tuesday evening, where he was joined by chief medical officer Brendan Murphy.

“These measures are really draconian … But if we’re going to control community transmission, we have to stop the capacity of this virus from spreading from person to person," Murphy said. “[It] is a long haul and that's why we're keen to keep society functioning, but keep society safe.”

The measures – which Morrison said each state may manage differently – include a complete ban on all overseas travel. "We previously had a 'do not travel' warning on Smart Traveller in terms of all overseas travel," Morrison said. "That will turn into a ban."

Exceptions to the ban include essential aid- and work-related travel and travel for compassionate reasons.

Group gatherings – initially limited to 500 last week, then to 100 for indoor events – will be restricted further. Weddings will be limited to no more than five people, and funerals to ten.

Food courts in shopping centres will close (though the shopping centres themselves can remain open), as will beauty salons (including tanning, waxing and nail services) and tattoo shops. Hairdressers and barbers can remain open but appointments can take no longer than 30 minutes. Real estate auctions and open house inspections have also been halted.

Arcades, galleries, museums and play centres were also on the list of venues to shut, though across the country many have already done so.

These restrictions follow the closure of all restaurants, bars, pubs, cafes, gyms, indoor sporting venues, cinemas, nightclubs and places of worship announced on Monday.

The Prime Minister also reinforced social distancing guidelines, advising Australians should "stay at home unless it is absolutely necessary" to leave the house, which he defined as shopping for basics, exercising and going out for medical reasons.

"You should only go outside your home to go to those essential things I talked about, not to go and congregate in groups," Morrison said. "We need you to stop doing that. That is not going to help."

He also "strongly encouraged" all Australians to work from home, and discouraged house parties in lieu of going to social gathering at places such as clubs and bars.

"Visits to your premises, to your house, to your residence, should be kept to a minimum and with very small numbers of guests," Morrison said. "We don’t want to be overly specific about that, we want Australians to exercise their common sense."

Schools will remain open for "essential workers", a term that was broadly defined.

"Everyone who has a job in this economy is an essential worker," Morrison said. "It can be essential in a service whether it’s a nurse or a doctor or a schoolteacher, or a public servant who is working tonight to ensure that we can get even greater capacity in our Centrelink offices."

Retail, broadly, remains exempt from mandated federal closures applied to the hospitality and entertainment industries.

The new measures come into effect at midnight on Wednesday.