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Virology Down Under

Facts, data, info, expert opinion and a reasonable, occasionally grumpy, voice on viruses: what they are, how they tick and the illnesses they may cause.

Category: Virus discovery

Sigh, yes, the ‘COVID virus’ is real

Posted onOctober 6, 2020November 3, 202024 Comments

There has been talk out thar in the wildlands of Twitter from people who don’t believe the evidence that the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is real. Has Read More …

CategoriesCOVID-19, Debunking, PCR, Virus discovery

We don’t yet know the origin story for SARS-CoV-2

Posted onMay 4, 2020May 4, 202025 Comments

By Katherine E Arden, PhD & Ian M Mackay, PhD The existence of a coronavirus related to severe acute respiratory syndrome coronavirus (SARS-CoV) was first hinted at by a researcher Read More …

CategoriesCOVID-19, SARS-CoV-2, Virus discovery

Not so novel: numbers: around COVID-19 and SARS-CoV-2

Posted onFebruary 20, 2020March 28, 20202 Comments

A mammoth overview was just released by researchers from the China Center for Disease Control and Prevention (their website is a bit slow right now so have patience).[1] It broke Read More …

CategoriesCoronavirus, SARS-CoV-2, Virus discovery

Novel Wuhan coronavirus cases leap up

Posted onJanuary 20, 2020January 21, 20203 Comments

Confirmed cases of the novel Wuhan coronavirus have gone from 62 detected in Wuhan (and 3 exports that we knew of then) to over 200 after a jump of 136 Read More …

CategoriesCluster, outbreak, emergence, Coronavirus, Virus discoveryTagsChina, outbreak, Wuhan

China +2

Posted onJanuary 16, 2020January 21, 2020

Two countries, in addition to China, have now had visits from the novel Wuhan coronavirus, detected in travellers with respiratory symptoms. Thailand and Japan have each reported a case and Read More …

CategoriesCluster, outbreak, emergence, Coronavirus, Virus discoveryTagsChina, Japan, pneumonia, Thailand, Wuhan

Some human-to-human transmission isn't surprising in Wuhan

Posted onJanuary 16, 2020January 16, 20204 Comments

A couple of people have asked me lately if they should be worried about the novel Wuhan coronavirus. Which got me to thinking. Much of what we sciencey types chat Read More …

CategoriesCluster, outbreak, emergence, Coronavirus, Virus discoveryTagspneumonia, Wuhan

Viral pneumonia cluster in Wuhan, central China: 44 cases and counting

Posted onJanuary 3, 2020December 31, 20215 Comments

Welcome to 2020 in which we already have reports of our first cluster of viral-pneumonia-of-unknown-cause cases, generating worldwide media and evoking memories of the sudden acute respiratory syndrome (SARS) coronavirus Read More …

CategoriesCluster, outbreak, emergence, Laboratory methods, Virus discoveryTagsChina, Hubei, Viral pneumonia, Wuhan

Flushing virus surveillance in Ecuador….

Posted onOctober 17, 2018

Tracking viruses in a community can mean testing lots and lots of people. That can be expensive, require a lot of permissions, approvals, a big and capable laboratory capacity and Read More …

CategoriesVirus discovery

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Recent Posts

  • Asymptomatic, acute and persistent COVID-19 symptom changes over the course of three infections March 5, 2026
  • How are asymptomatic COVID-19 cases tracking? March 2, 2026
  • Another way to look at flu season size February 28, 2026
  • Whooping cough in 2024 was huge in Australia, but is declining in 2025 and 2026 February 19, 2026
  • Pathology lab PCR is not research lab PCR January 27, 2026
  • Is there more flu in Australia and New Zealand than normal for Christmas? Hell Yes! December 27, 2025
  • Catch them all? There are three different influenza viruses and they can co-circulate each season August 22, 2025
  • The “Infection Pause”: because it’s about fewer infections, not an immune debt to repay July 31, 2025
  • A Flunami in July July 27, 2025
  • COVID-19 is a Pandemic: What if it was a Pandemic Emergency? And what are they anyway? July 24, 2025
  • In Australia, COVID-19 deaths did decrease between 2023 and 2024, but it’s still a major killer. July 2, 2025
  • Flu down under is a July thing June 16, 2025
  • Q fever – an old zoonosis with a better diagnosis June 9, 2025
  • What if Harvard loses? April 19, 2025
  • Measles takes your immune memories April 9, 2025

All opinions are my own and do not represent medical advice or the views of any institution.

All graphics made by me are free-to-use. Please just cite the particular page, blog and me. A heads-up would be nice, but that can happen later.

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Regular reads…

  • FluTrackers-everything infectious, before it happens
  • Mike Coston’s Avian Flu Diary
  • ProMED mail
  • WHO Disease Outbreak News
  • HealthMap
  • STAT News
  • CIDRAP-timely infectious disease reporting
  • Kai Kupferschmidt
  • Martin Enserink

Recent Posts

  • Asymptomatic, acute and persistent COVID-19 symptom changes over the course of three infections
  • How are asymptomatic COVID-19 cases tracking?
  • Another way to look at flu season size
  • Whooping cough in 2024 was huge in Australia, but is declining in 2025 and 2026
  • Pathology lab PCR is not research lab PCR

All opinions are my own and do not represent medical advice or the views of any institution.

All graphics made by me are free-to-use. Please just cite the particular page, blog and me. A heads-up would be nice too but that can happen later.

Bluesky: @mackayim.bsky.social

Threads: @mackayim.2024

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