Infectious Thoughts

Victoria’s lockdown ‘an endless game of Covid-19 whack-a-mole’

Siouxsie Wiles Aug 04, 2020

Siouxsie Wiles The restrictions in place for metropolitan Melbourne now are in some ways stricter than those that were in force during New Zealand’s COVID-19 lockdown. A curfew is in place and most people have to wear masks when they leave their home – neither of which happened in New Zealand. But the state of Victoria has lost valuable … Read More

Four possible scenarios for the Australian and South Korean travellers

Siouxsie Wiles Aug 01, 2020

Over the last few days, reports have emerged of people travelling from New Zealand and testing positive for Covid-19 upon arrival at their destination. First in South Korea and now in Australia. What might these positive tests mean? They’re false-positives As Toby Morris and I have explained before, there are different ways to test someone for Covid-19. The main ways … Read More

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Why I’m confident there is no community transmission in NZ

Siouxsie Wiles Jun 25, 2020

Both the leader of the opposition Todd Muller and University of Auckland Professor Des Gorman have gone on the record as saying they suspect Covid-19 is spreading in the community in New Zealand once again. Let me explain why I don’t agree with them. As best I can tell there are two reasons Muller and Gorman have jumped to the … Read More

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Why are we seeing these new cases of Covid-19 in New Zealand?

Siouxsie Wiles Jun 23, 2020

After weeks of no new cases of Covid-19, in the last week we’ve recorded nine. That’s sounds pretty scary, but here’s why there’s no reason to panic. For weeks now, almost every day there have been over 100,000 new confirmed cases of Covid-19 around the world. On two days last week that number topped 170,000. Sadly, it looks like the … Read More

What do we mean we talk about the ‘elimination’ of Covid-19?

Siouxsie Wiles Apr 24, 2020

New Zealand is pursuing an ‘elimination’ strategy to counter the coronavirus pandemic. But that word, as with many terms in science, is not necessarily the same as its common usage. Here in Aotearoa New Zealand, our plan is to eliminate Covid-19. We have long since abandoned the “flatten the curve” strategy, which aims to slow the spread of the … Read More

Just how widespread is Covid-19 in people with no symptoms?

Siouxsie Wiles Apr 22, 2020

Did you hear about the testing of the general population in Iceland for Covid-19 that found that half of the people who tested positive didn’t have any symptoms? When I heard that, the first thing I thought was: shit, there are heaps of people walking around spreading Covid-19! And they don’t even know it, aaargh! I had a similar … Read More