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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: Rhinovirus

There are a lot of people sick….again…in winter….

Posted onJune 28, 2026June 28, 2026

Yep. It’s a time of year in many parts of the world when viruses that love a warm human airway, kick it up a notch – influenza, respiratory syncytial virus Read More …

CategoriesEpidemic, Rhinovirus, RSV

Masks matter for more than mandates

Posted onJuly 7, 2022July 1, 20253 Comments

The amount of virus per amount of snot, air, monkey or whatever is a way to describe the concentration of virus present in that thing. It might seem intuitive to Read More …

CategoriesAerosols, COVID-19, Masks, Rhinovirus, SARS-CoV-2TagsInfectious dose, Plaque forming assay, TCID50

Arrr a piRATe

Arrrrr on the rise (Rhinovirus, RSV and RATs)

Posted onMarch 19, 2022March 26, 2022

Anecdotally there are a lot of acute respiratory virus infections ripping through the community where I live. Particularly noticeable in schools but also workplaces. Yes, there is SARS-CoV-2 among these Read More …

CategoriesRhinovirus, SARS-CoV-2, Transmission

Thank goodness we did all the work

Posted onJanuary 29, 2022July 16, 20226 Comments

Thank goodness we didn’t hold off on opening up to see what Omicron was capable of. We had to have Christmas. And there were national cabinet agreements. Anyway, how could Read More …

CategoriesAerosols, Communication, Coronavirus, COVID-19, Editorial, Enterovirus, Influenza, Parechovirus, Rhinovirus, SARS-CoV-2, Transmission

The Swiss cheese infographic that went viral

Posted onDecember 26, 2020August 11, 202533 Comments

A visual representation of how to prevent transmission of SARS-CoV-2 struck a chord with many in 2020. I won’t rehash all that has already been written about the Swiss cheese Read More …

CategoriesCommunication, COVID-19, Rhinovirus, SARS-CoV-2

Yes, PCR tests can detect “the COVID virus”

Posted onAugust 4, 2020July 1, 2025114 Comments

I was asked to write some comments for a fact check article about some of the myths going around about PCR-based testing and whether PCR tests can detect “the COVID Read More …

CategoriesCommunication, Debunking, DNA, Laboratory methods, PCR, Rhinovirus, SARS-CoV-2TagsRT-PCR, RT-rPCR

Rhinovirus rampant or testing triumphant?

Posted onJune 27, 2020July 29, 202617 Comments

Turns out, this physical distancing thing actually works as advertised. Who would have thought that keeping the things viruses need for their survival – hosts full of cells – far Read More …

CategoriesCOVID-19, Picornavirus, Rhinovirus

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

Memories

Posted onFebruary 25, 2019July 1, 2025

Dug these up from the old blog after a chat with a collaborator who recalled one of them fondly. I regret nothing!!! IMPORTED POSTS* You’re the virus I got… To Read More …

CategoriesChuckles, Rhinovirus

How many common cold viruses in one place, in one season?

Posted onSeptember 2, 2018September 22, 20203 Comments

I was recently asked how many common cold viruses are among us at a given time? The short answer is – dozens!  In the past, I’ve written a few reviews (for Read More …

CategoriesRhinovirusTagscommon cold, epidemiology, genotype, molecular epidemiology, PCR, rhinovirus

During the first 4 weeks of life “common cold” viruses occur frequently and can make your little one sick….

Posted onAugust 31, 2018June 28, 2026

Not much is known about the number of, and the burden due to, virus infections that happen during the very first four weeks of life, called the “neonatal period“. IMPORTED Read More …

CategoriesRhinovirusTagscommunity cohort, ORChID, respiratory virus, rhinovirus

Only effective vaccines can protect us from respiratory viruses because we’re us

Posted onAugust 24, 2018August 25, 2018

As winter wraps up in Australia, it’s become quite clear that – barring a very unusual late burst of activity – the 2018 influenza (flu) season has passed Australia by with Read More …

CategoriesInfluenza, RhinovirusTagscommon cold, epidemic, Flu, household, influenza, outbreak, pandemic, respiratory viruses, vaccine

“Rhinovirus” occurs in people who are not sick ergo it never causes sickness…

Posted onDecember 27, 2017June 28, 2026

In a community study of healthy infants reported in 2015, the authors stated that “Our finding of low RSV prevalence in asymptomatic infants suggests that RSV is likely the causative Read More …

CategoriesPicornavirus, RhinovirusTagsdistinct, genotype, HRV, rhinovirus, RV, RV-A, RV-B, RV-C, species

Rhinovirus C makes use of less regulation…

Posted onNovember 21, 2017July 13, 2019

A new Australian study may help to explain why asthmatics have trouble suppressing the inflammation triggered by respiratory virus infections.[1] And it’s to do with Rhinovirus C. In particular, the Read More …

CategoriesPicornavirus, Rhinovirus

A cold virus in the blood…

Posted onOctober 25, 2017July 1, 20252 Comments

Sometimes, viruses jump – or leak – from where we think they belong, turning up in an unexpected body compartment. We saw it with Ebola virus – it’s now known Read More …

CategoriesRhinovirus, UncategorizedTagscommunity acquired pneumonia, pneumonia, poliovirus, rhinovirus, viraemia

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Recent Posts

  • During COVID-19, we smashed flu August 1, 2026
  • Virus on a boat – a belated graphic July 13, 2026
  • There are a lot of people sick….again…in winter…. June 28, 2026
  • A/H5N1 strain of avian influenza A virus (“bird flu”) confirmed in two dead birds in Australia June 20, 2026
  • Well, the day had to come. “Bird flu” flies into Australia on a feathered wing. June 19, 2026
  • Looks like Flu has reset in Australia June 5, 2026
  • The ridiculously oversimplified claim that PCR can “detect one single molecule” May 26, 2026
  • Just 0.7% of of universally screened asymptomatic patients produced unrepeatable PCR tests May 2, 2026
  • A little virus that still can: poliovirus and poliomyelitis May 1, 2026
  • 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

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…

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  • Kai Kupferschmidt
  • Martin Enserink

Recent Posts

  • During COVID-19, we smashed flu
  • Virus on a boat – a belated graphic
  • There are a lot of people sick….again…in winter….
  • A/H5N1 strain of avian influenza A virus (“bird flu”) confirmed in two dead birds in Australia
  • Well, the day had to come. “Bird flu” flies into Australia on a feathered wing.

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

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