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
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We are in uncharted territory- lifting restrictions without 0 cases over 2 incubation periods. 😷Low but persistent cases in NSW & Victoria. 😷Wear a good, 3 layer home made mask & keep the mouth shut wearing it, to reduce chance of infection by up to 70%.tinyurl.com/y8llm7e3
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You can achieve between 10-70% depending on quality. The WHO recommends cloth mask with 3 layers and this should provide protection towards the higher end of this range.
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Commuters and close contact workers- if you wear a good, 3 layer home made mask AND keep your mouth shut while you wear it, you’ll reduce chance of infection by up to 70%. For latest @WHO mask info- tinyurl.com/y8llm7e3 #COVID19 #WearAMask
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DrAsh- Somewhere between 10-70% depending on quality. The WHO recommends cloth mask with 3 layers and this should provide protection towards the higher end of this range.
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Lifts, public transport, aeroplanes, crowded work place.... facebook.com/154163327962392…
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Agree - we must be able to focus on more than one public health issue at a time.
Racism is a life and death epidemic for Black Aust. Can't condemn BlackLivesMatter rallies: Outdoors, most worn masks, most quiet keeping masks integrity. Collaboration btw authorities & public vital for continued resilience & mental health during COVID.
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Pleased with our committee's outcome - community 😷 use in crowds "A UNSW Medicine Professor and advisor to the World Health Organisation says the WHO’s updated mask advice, released today, is timely news for Australia, too." newsroom.unsw.edu.au/news/he…
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Not just me who identified problems & limitations with COVIDSafe app. Instead of fearing academic critique, governments could listen & learn for improvement: COVIDSafe app designed for the wrong pandemic afr.com/technology/covidsafe…
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Not just me who identified problems & limitations with COVIDSafe app. Instead of fearing academic critique, governments could listen & learn for improvement: COVIDSafe app designed for the wrong pandemic afr.com/technology/covidsafe…
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Replying to @Blanch68L
Great to hear you enjoyed your time at UNSW and nice to reconnect 👌
Mask truth: medical masks for clinicians 98% protection. Cloth mask 10-60% but better than nothing! Wear a mask on public transport. Give mask a soapy wash daily; on/off with clean hands; store in ziplock bag. #Covid19aus #coronavirusAustralia
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Saying masks on trains/buses will produce complacency like arguing vaccines stop hygiene practices. Truth: medical masks for clinicians 98% protection. Cloth mask 10-60% but better than nothing! soapy wash daily; on/off with clean hands,🤐 while wearing mask, store in ziplock bag
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Replying to @drmichaelhooper
Antibody study in Wuhan will show who has current, recent, past infection and with such high prevalence in Wuhan will provide important insight but Aus has too few cases spread across 8 cities, yet a great study for asymptomatic case load.
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14 days from last 0 case for each state indicates confidence community spread negligible. We aren't there yet. "Precautionary Principle" states we sometimes need to act in absence of evidence - please wear a mask on public transport/planes.
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Nice piece on WHO leadership on water, sanitation and hygiene reducing COVID-19 impacts covid19waterblog.wordpress.c…
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True. It’s a very painful time. I give advice as an epidemiologist; governments balance all the issues and make the final decisions. My workload has gone up though- many extra hours and late nights at my desk.
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Six @WHO criteria for easing restrictions: 1. Cases declining; transmission controlled 2. Capacity to detect,isolate,treat & trace; 3. Risk control in special settings eg Aged Care 4. Preventive measures, wherever people must gather 5. Managed borders 6. Community engaged.
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Six @WHO criteria for easing restrictions: 1. Cases declining; transmission controlled 2. Capacity to detect,isolate,treat & trace; 3. Risk control in special settings eg Aged Care 4. Preventive measures, wherever people must gather 5. Managed borders 6. Community engaged.
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