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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: DNA

The mechanics of the polymerase chain reaction (PCR)…a primer

Posted onDecember 28, 2020December 28, 2020

The polymerase chain reaction (PCR) is a technique for copying a piece of DNA a billion-fold. As the name suggests, the process creates a chain of many pieces, in this Read More …

CategoriesDNA, Laboratory methods, PCRTagsdiagnostics, DNA Down Under (DDU)

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

The structure of DNA… a primer

Posted onApril 1, 2015December 30, 2020

For an organism or a virus, to grow or replicate, it must make new pieces of itself and assemble those pieces into something functional. Let’s take a short walk through Read More …

CategoriesDNA, PCRTagsDNA chemistry, DNA Down Under (DDU)

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Recent Posts

  • 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
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  • 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

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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Recent Posts

  • Just 0.7% of of universally screened asymptomatic patients produced unrepeatable PCR tests
  • A little virus that still can: poliovirus and poliomyelitis
  • 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?

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.

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