Mike Honey Profile picture
Jun 28 8 tweets 3 min read Read on X
Here's the latest variant picture with a global scope, to early June.

The LP.8.1.*, NB.1.8.1 "Nimbus" and XFG.* "Stratus" variants are battling for dominance in an unclear picture.

#COVID19 #Global #NB_1_8_1 #Nimbus #XFG #Stratus
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XFG.* "Stratus" seemed to have the best underlying momentum, until recently when samples from the US became less dominant.
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Here are the trends across all the International Traveller samples. From that perspective, XFG.* "Stratus" is now dominant for the first time, at 43%.

This dataset (mostly arrivals in the US and Japan) is arguably more random, as it is not skewed by sequencing volumes.
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Globally, the NB.1.8.1 "Nimbus" variant is showing a slowing growth advantage of 3.3% per day (25% per week) over the LP.8.1.* variant, with a crossover in late May.
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Here are the leading countries reporting NB.1.8.1 "Nimbus". There seem to be 3 tracks:
- China, Hong Kong and Thailand are reporting a clean sweep
- Singapore and Australia show steady growth to around 50%
- growth in the US and Canada has been lower.
🧵 Image
Globally, the XFG.* "Stratus" variant is showing a stronger growth advantage of 6.3% per day (45% per week) over the LP.8.1.* variant. That shows a crossover in early June.
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Here are the leading countries reporting XFG.* "Stratus". It reached 77% in India, before falling to finish at 73%. It has also shown sustained growth to 39% in the US and 34% in Spain.
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More from @Mike_Honey_

Jun 28
Here's the latest variant picture for the "Global - Other" countries, to early June.

The NB.1.8.1 "Nimbus" variant rose as high as 61%, but fell back in later samples to 26%.

XFG.* "Stratus" grew strongly to 49%.

#COVID19 #GlobalOther #NB_1_8_1 #Nimbus #XFG #Stratus
🧵 Image
This perspective excludes all the high-volume countries and regions that I routinely report on: Australia, NZ, Europe, Canada and the US. The remaining countries are aggregated into this report.
🧵
For the "Global - Other" countries, the XFG.* "Stratus" variant is showing a strong and accelerating growth advantage of 7.5% per day (53% per week) over the NB.1.8.1 "Nimbus" variant, with a crossover in early June.
🧵 Image
Read 7 tweets
Jun 28
Here's the latest variant picture for the United States, to early June.

The XFG.* "Stratus" variant grew strongly to dominance at 41%, while LP.8.1.* fell to 25%.

The NB.1.8.1 "Nimbus" variant grew steadily, to 20%.

#COVID19 #USA #XFG #Stratus #NB_1_8_1 #Nimbus
🧵 Image
For the US, the XFG.* "Stratus" variant shows a strong growth advantage of 5.9% per day (41% per week) over LP.8.1.*, with a crossover in early June.
🧵 Image
XFG.* "Stratus" has mainly been reported from New York state, rising to 58% frequency. Maryland finished at 50%. It has also been quite common among the International Traveller samples at 30-35%.
🧵 Image
Read 6 tweets
Jun 28
Here's the latest variant picture for Canada, to mid-June.

The NB.1.8.1 "Nimbus" variant grew strongly to dominance at around 36%. LP.8.1.* fell to around 28%.

#COVID19 #Canada #NB_1_8_1 #Nimbus #XFG #Stratus
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The XFG.* "Stratus" variant is also quite prevalent at around 19%. This is a novel scenario – until now I’ve only seen one or the other growing strongly in each country or region.
🧵
A double-wave seems very likely in Canada. This scenario raises the risk of rapid reinfections, for those relying on immunity from a recent infection.
🧵
Read 8 tweets
Jun 28
Australian COVID-19 weekly stats update:

The risk estimate rose sharply again last week to 1.6% “Currently Infectious”, or 1-in-64. After 7 weeks, there’s still no peak in sight.

That implies a 38% chance that someone is infectious in a group of 30.

#COVID19 #Australia
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Here’s the historical series that drives the risk estimate: Staff Cases (Weekly) in Residential Aged Care, to try to put this wave into context against the other waves since 2022.
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It’s perhaps a heroic assumption at this point to imagine that the testing ascertainment rates (accuracy) has remained consistent. Earlier in the pandemic there were effectively financial incentives for accurate reporting, which I understand have since been withdrawn.
🧵
Read 11 tweets
Jun 26
I see @WHO have just added XFG.* (nicknamed "Stratus") as a "Variant Under Monitoring" (VUM).

I have it already dominant globally*, so only directing public health to pay attention to it now seems way too late to mitigate the waves it is now causing.
#COVID19 #XFG #Stratus
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Here's their variant list, which links to their analysis on each VUM

🧵data.who.int/dashboards/cov…
The typical boilerplate language on severity and deaths is included in their analysis, almost a copy and paste from "The Vertlantic"
🧵
Read 5 tweets
Jun 22
Here's the latest variant picture for the "Global - Other" countries, to early June.

The NB.1.8.1 "Nimbus" variant rose as high as 57%, but fell back in later samples to 29%.

The XFG.* "Stratus" variant grew to 27%.

#COVID19 #GlobalOther #NB_1_8_1 #Nimbus #XFG #Stratus
🧵 Image
The odd-looking bump in the JN.1.* + FLiRT group is down to a relatively large batch of samples collected across 3 days in late May, from Kazakhstan. The LF.7.1.3 sub-variant was dominant.

That will likely be smoothed out as more data arrives from other countries.
🧵
This perspective excludes all the high-volume countries and regions that I routinely report on: Australia, NZ, Europe, Canada and the US. The remaining countries are aggregated into this report.
🧵
Read 8 tweets

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