Professor of Epidemiology @UNSW with an eye on infection at all times. Advisor to @WHO Health Emergencies IPC Preparedness, Readiness and Response to COVID-19

Sydney, New South Wales
Joined December 2015
lets do the maths - in the last week Australians suffered biggest jump by 172 cases. Week before jump by 47. Early strong border is unpleasant but allows contact tracing, isolation, business 'nearly' as usual (imports/exports ok). Stay strong Australia.
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Gov records show 61% of cases have direct/indirect travel history. If cases still under investigation follow similar pattern then over 80% of cases have travel history. This makes border closure + 14 day isolation for all travellers an epidemiologically sound decision. About time
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2/2 The next phase is called “Mitigation” This includes protecting Aged Care, closing Schools, preventing travel into our First Nation regions etc. “Mitigation” isn’t needed yet, especially as our PM has just announced border closure with isolation 👌#coronavirusaustralia
1/2 Contact tracing of positive cases leads to their evaluation for isolation & testing. It’s too soon, to be running temperature testing in the community to evaluate those who need #Coronavirus tests.(This mitigation phase occurs when cases are higher, but also in an epicentre)
Replying to @9NewsAUS
Thank you all. This is the time for tough decisions. We totally support this decision. 👌 #coronavirusaustralia
An excellent decision, based on the best research currently available as well as the most successful #coronavirus containment examples.
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Just announced by @ScottMorrisonMP- Border security requiring 14 days isolation for all entries. Thank you all. This is the time for tough decisions. We totally support this decision. 👌 #coronavirusaustralia
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Quarantine for 14 days for overseas visitors, combined with vigorous containment at a local level, will give us the best possible results.
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Dr Visser explains it well! My experience with SARS and on the WHO COVID-19 expert panel for infection prevention, indicate that without border protection this virus will rapidly spread to the vulnerable. That places great strain on hospitals.
WOW! Read this from Dr Adam Visser, an intensive care specialist in Toowoomba, and understand the dilemma. Understand the urgent need to take this pandemic seriously Far more seriously than “mass gatherings can go ahead until Monday”. #COVID19Aus @ScottMorrisonMP @GregHuntMP
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My experience with SARS and on the WHO COVID-19 expert panel for infection prevention, is that without border protection this virus will rapidly spread to the vulnerable. #coronavirusaustralia
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Replying to @whereisdaz
My experience with SARS and on the WHO COVID-19 expert panel for infection prevention indicate that without border protection this virus will rapidly spread to the vulnerable. Border protection doesnt mean no imports/exports. Just no unnecessary entry without 14/7 isolation.
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Virologists (vaccines), epidemiologists (outbreaks) and economists ($) differ on infection control. My experience, as an epidemologist, is that without border protection this virus will rapidly spread to the vulnerable.
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Mary-Louise McLaws retweeted
The Italian airforce gives a big emotional lift to their nation with Pavarotti singing Nessun Dorma (let no one sleep)and where lyrics say venceremos(we will overcome)they have their planes dramatically facing and overpowering the single plane (virus) with their National Flag!
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Replying to @MohammedOwaisQH
Thank you for your comment. If we close our borders to anyone who can’t or won’t isolate for 14 days, as well as isolate infected Australians (and their contacts) we should not need to close local events.
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Evidence shows closing our borders is the most effective way to control the spread of Covid-19 Anyone who must come in, isolates 14 days. Within Australia anyone who gets the virus (& their contacts) isolates 14 days.
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Replying to @ChemistryNathan
Evidence shows closing our borders is the most effective way to control the spread of Covid-19 Anyone who must come in, isolates 14 days. Within Australia anyone who gets the virus (& their contacts) isolates 14 days.
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Replying to @djoll
Evidence shows closing our borders is the most effective way to control the spread of Covid-19 Anyone who must come in, isolates 14 days. Within Australia anyone who gets the virus (& their contacts) isolates 14 days.
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Evidence shows closing our borders is the most effective way to control the spread of Covid-19 Anyone who must come in, isolates 14 days. Within Australia anyone who gets the virus (& their contacts) isolates 14 days.
Evidence shows this is the most effective way to control the spread of Covid-19. Closing the borders need not stop trade. Anyone who must come in, isolates 14 days. Within Australia anyone who gets the virus (& their contacts) isolates 14 days. Sport & public events could go on.
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