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BA.2.12.1 is most infectious. BA.2.2 is most deadly. BA.2.23 looks ominous.
I know this from what is going on in the USA and Hong Kong respectively. BA.2.12.1 is overtaking all other variants atm in the USA. BA.2.2 has a higher CFR than other BA.2.* variants. Here is the genetic structure of their Spike protein some other BA.2 relatives. Once again I point out that BA.2 is…
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Why is China so keen to stay #zerocovid?
There are lots of reasons, and I believe Australia should have stayed #zerocovid as well. People could have still travelled etc but they would just have to quarantine when they came home. For many it could have been home quarantine. Back to China. Why are they so keen to stay zerocovid? The coronavirus is a…
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Australia thinks herd immunity is possible. It is not.
When Australia started to mandate the vaccine, it must have thought herd immunity was possible but it was not, and that was with the delta variant in August/ September/October 2021. I have calculated that the R naught value of delta variant is about 12.5. Here is a graph I circulated lat year. Th R naught…
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Omicron now has 73 subvariants
Omicron B.1.1.529, now has 73 subvariants. These variants are being generated in the huge “virus pools” of vaccinated people as I have repeatedly noted since July 2021. The Delta variant generated 245 sublineages. The problem is that vaccines do not stop infection and transmission of the coronavirus. Currently vaccines have an efficacy of about 30-40%…
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The BA.2 subvariants > BA.1 subvariants in the UK. Deaths Rising.
Just a quick update on what the variants are doing in the UK. It seems the BA.2 subvariants and all growing while the BA.1 subvariants are being replaced. BA.2, BA.2.3, BA2.9, BA.2.10, and BA.2.12 are all growing in prevalence with BA.2.9 probably growing the fastest and BA.2 the slowest. All the BA.1 subvariants are reducing…
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Petri Dish Cruise ships will now be allowed back into Australia.
It seems the world has given up on covid19 and are going to let it spread/rip. With 100 million people actively infected inside a constant “virus pool”, anything is still possible. Mutations are are of less concern than recombinants which are highly likely. We are far from out of the woods., Denmark’s CFR went from…
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BA.2 is not Omicron. And what are BA.4 and BA.5?
BA.2 is very different to BA.1 and BA.3. Why is it called Omicron? Because it came from South Africa around the same time. I thought the whole purpose of using Greek letters was so we could not tell where the variant came from. Delta always reminds me of the Ganges delta plains and hence of…
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The subvariants of Omicron have exploded. Australia is getting buried in new subvariants from within and from the outside. Welcome to the “New World Disorder”.
Last I looked (a couple of day ago) we had 54 subvariants of Omicron listed by GISAID. BA.1 was the one that swept the world first. BA.2 looked more ominous as its spike protein was quite different to BA.1 and BA.3, and it subvariants are the ones I have been most concerned about. Look at…
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Was Denmark too hasty to declare that the coronavirus was just a flu and life was now normal again?
When Denmark’s Case Fatality Rate (CFR) dropped to 0.04% (7-day-runng average) in January 2022, the government of Denmark declared the pandemic was over. With a CFR so low, noting that the CFR for influenza is about 0.1 to 0.15%, that made reasonable sense. In early February most restrictions were subsequently lifted. It was said that…
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What is Omicron XE? Should we worry?
From what I know Omicron XE is some hybrid on BA.1 and BA.2 subvariants of omicron. The Omicron variants are the most infectious variants so far but their case fatality rates seem to be quite low 0.1 to 0.3%. There is still some uncertainly with BA.2. It may be more virulent. I have been unable…
Dr George Christos
covid19 & other Infectious diseases