Menu

Primary Menu

Skip to content
  • Home
  • About Me
Show Header Sidebar Content

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.

Latest posts...

don't forget to signup, login, follow and Like them!

Age and COVID-19: What’s with all the young kids?

Age and COVID-19: What’s with all the young kids?

Inspired by an online conversation and the hard work of others, I set off to examine age groupings among Australians confirmed as COVID-19 cases, based on testing using a quality-laboratory Read More ...

Another way to look at flu season size

Another way to look at flu season size

Peak height, number of cases, deaths, severity – these are all terms that are used to give you an idea of how big a flu season has been. Here’s another Read More ...

The “Infection Pause”: because it’s about fewer infections, not an immune debt to repay

The “Infection Pause”: because it’s about fewer infections, not an immune debt to repay

There was a real, measurable shift in the peak season for several endemic human pathogens as well as a rebound in infections, coinfections, and disease severity among them after the Read More ...

Asymptomatic, acute and persistent COVID-19 symptom changes over the course of three infections

Asymptomatic, acute and persistent COVID-19 symptom changes over the course of three infections

Data from a UK healthcare worker cohort published in 2024 examined how signs and symptoms of COVID-19 changed after 1, 2, or 3 SARS-CoV-2 lab-confirmed infections. Those with no symptoms Read More ...

COVID-19 cases slow a little in Australia

Posted onMarch 27, 2020March 28, 202014 Comments

Our borders have been shut to non-citizens for about a week and despite being regularly admonished for being terrible at obeying confusing, constantly changing or poorly communicated new rules, the Read More …

CategoriesUncategorized

COVID-19 is not a virus, but SARS-CoV-2 is

Posted onMarch 21, 2020March 23, 202050 Comments

For about two weeks we lived with, published using, and talked about, a disease-causing virus called the “novel coronavirus”. That name was always going to create problems like, what do Read More …

CategoriesCoronavirus, COVID-19

Politically infectious period

Posted onMarch 20, 2020March 20, 20206 Comments

A senior Australian politician arrived in Australia from the United States (US) carrying a SARS-CoV-2 infection. Many infected travellers are arriving from the US at the moment. He self-reports becoming Read More …

CategoriesUncategorized

Why does soap work so well on SARS-CoV-2?

Posted onMarch 9, 2020March 9, 202047 Comments

This is a guest post from Prof Palli Thordarson of the Uni of New South Wales. It was previously posted in a Twitter thread and on Facebook and has been Read More …

CategoriesCoronavirus, COVID-19, TransmissionTagsCleaning, Disinfection, Soap

COVID-19 in Australia

Posted onMarch 9, 2020March 9, 202011 Comments

As the cases begin to build up – but are still pretty low with limited community spread having been detected – now is a good time to start watching where Read More …

CategoriesCoronavirus, COVID-19, Pandemic, SARS-CoV-2TagsAustralia, epidemiology

Face off

Posted onMarch 8, 2020July 1, 202515 Comments

We touch our faces often. Maybe 3 to 23 times an hour often! But if our hands haven’t just been washed and we’ve touched surfaces contaminated by viruses surviving in Read More …

CategoriesCoronavirus, COVID-19, Rhinovirus

Ya es tiempo pasado para decirle al público: ‘Probablemente será una pandemia, y todos deberíamos prepararnos ahora’

Posted onMarch 7, 2020March 7, 2020

Por Jody Lanard y Peter M. Sandman al Español por Daniel Romero-AlvarezPublicado originalmente en Inglés por Ian M. Mackay en su blog personalA translated version of my earlier post, performed Read More …

CategoriesCommunication, Coronavirus, COVID-19

Add some balance to the expert commentary

Posted onMarch 1, 2020July 10, 20208 Comments

Look. If this triggers your innate biases or your need to call me out as a virtue signaler or tell me “now isn’t the time”, seriously save yourself the spittle Read More …

CategoriesCommunication, Coronavirus, COVID-19

¿Piensas que pronto estarás en una pandemia?

Posted onFebruary 29, 2020February 29, 20203 Comments

Por Ian M Mackay, PhD y Katherine E Arden PhDKindly translated by Assistant Professor María Paz Bertoglia Arredondo El síndrome agudo respiratorio severo Coronavirus 2 (SARS-CoV-2 [1]) se ha expandido Read More …

CategoriesCommunication, Coronavirus, COVID-19, Pandemic

So you think you’re about to be in a pandemic?

Posted onFebruary 25, 2020July 12, 2020217 Comments

by Ian M Mackay, PhD and Katherine E Arden PhD The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2 [1]) has spread to over 30 countries and regions outside mainland China. Read More …

CategoriesCommunication, Coronavirus, Pandemic

Past Time to Tell the Public: “It Will Probably Go Pandemic, and We Should All Prepare Now”

Posted onFebruary 23, 2020February 23, 2020331 Comments

by Jody Lanard and Peter M. Sandman NOTE FROM IAN: The expert risk communication team of Lanard and Sandman has given me permission to post their very well-considered reply to Read More …

CategoriesCommunication, COVID-19, SARS-CoV-2

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

Flight of the aerosol

Posted onFebruary 9, 2020August 5, 20257 Comments

Understanding what we mean when we discuss airborne virus infection risk. An article collaboratively written by (alphabetically).. Dr. Katherine ArdenA former postdoctoral researcher with interests in the detection, culture, characterization and epidemiology of respiratory viruses.Dr Graham Read More …

CategoriesCoronavirus, Ebola virus, Transmission

Wuhan remains the source, for now

Posted onJanuary 21, 2020January 22, 20202 Comments

Cases of the novel Wuhan coronavirus remain anchored in contact with the city of Wuhan in Hubei province. When that changes and we see human-to-human (h2h) spread occur outside of Read More …

CategoriesUncategorized

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

Post navigation

← Older posts
Newer posts →

More of VDU

  • Pinterest
  • Google
  • Facebook
  • Mastodon

Recent Posts

  • Age and COVID-19: What’s with all the young kids? April 14, 2026
  • 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

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.

Tags

anti-vaccination asymptomatic Australia avian influenza China Democratic Republic of the Congo DRC Ebola virus Ebola virus disease epidemic epidemiology EVD Flu flunami flu season genotype H1N1 H3N2 H7N9 HTLV HTLV-1c influenza influenza virus MERS MERS-CoV molecular epidemiology outbreak PCR pneumonia Queensland reporting respiratory virus rhinovirus RT-PCR SciComm science communication seasonal influenza social media SoMe summer transmission United States of America vaccine Wuhan Zaire ebolavirus

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

  • Age and COVID-19: What’s with all the young kids?
  • 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

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

Mastodon: @mackayim2022@mastodon.social

 

Copyright © 2026 Virology Down Under. All Rights Reserved.
• The following link is used to verify that I 'own' the domain
for use with Mastodon
Theme: Clean Box Pro
Scroll Up
  • Home
  • About Me

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.

Skip to content ↓