Delta/DeltaPlus, has some specific mutations the virus developed to make itself stronger (more infective, faster replicating). This builds on the mutations in Beta. Lambda (now 2% or so) has 7 mutations of beta mutations. According to NewDelhi TV, Delta has 20 mutations of alpha.
Beta was 50% more contageous than Alpha and Delta is 80% more contageous than Beta. I’ve seen Delta contageous at anywhere from 225% more to 1000% more. Neither are good. Alpha was 6-10 days to be contageous; Delta is 3.7 days to be contageous. All are airborne. The ROI (rate of infection - cases spread by one case) of Beta was 2; the ROI of Delta is 5-8 (the Aussies have confirmed an ROI of 5 and this is what is scaring the poo out of Washington - the ROI of smallpox is 6 for comparison)
Wuhan’s original release was a baby virus. Now we’ve got a toddler virus running around
Technical from India Times:
“, Delta has dropped E484Q and incorporated the T478K mutation, which is also seen in Mexican variants and is under close watch for its role. A pre-print research paper from Japan, however, terms the P681R mutation a ‘hallmark of the Delta variant’ that ‘facilitates the spike protein cleavage and enhances viral fusogenicity’
if you’ve got 4 minutes here’s a no-sound necessary little white-board video that compares the variants of concern and why
https://www.youtube.com/watch?v=x6KhW353xHk
info on DeltaPlus:
“Delta Plus – A Sub-Variant
Another reason why the Delta variant is one of the most worrisome strains is that it also has a sub-variant known as Delta Plus, also known as B.1.617.2.1 or AY.1. This particular coronavirus strain allows it to attack the lung cells more strongly and may also escape the protection offered by the vaccine.
The sub-variant is considered to be the variant... responsible for the recent wave of COVID-19 in India. While the Indian health authorities have already classified it as a variant of concern, the WHO and CDC do not consider it as a variant of concern.
https://www.howard-fensterman-charities.com/2021/07/covid-19-delta-variant/
PREPRINT:
“The SARS-CoV-2 B.1.617 lineage was identified in October 2020 in India1–5. It has since then become dominant in some indian regions and UK and further spread to many countries6. The lineage includes three main subtypes (B1.617.1, B.1.617.2 and B.1.617.3), harbouring diverse Spike mutations in the N-terminal domain (NTD) and the receptor binding domain (RBD) which may increase their immune evasion potential. B.1.617.2, also termed variant Delta, is believed to spread faster than other variants.
“. Variant Delta was resistant to neutralization by some anti-NTD and anti-RBD mAbs including Bamlanivimab, which were impaired in binding to the Spike. Sera from convalescent patients collected up to 12 months post symptoms were 4 fold less potent against variant Delta, relative to variant Alpha (B.1.1.7). Sera from individuals having received one dose of Pfizer or AstraZeneca vaccines barely inhibited variant Delta. Administration of two doses generated a neutralizing response in 95% of individuals..”
https://www.nature.com/articles/s41586-021-03777-9
When did global respiratory viruses start mutating in the direction of more infectious and more deadly?
We have new variants of influenza and common colds every year.
The USA flu vaccination rate is usually around 50%, and in most years the vaccine completely whiffs on at least one virus.
Yet, since 2010, the USA flu infection rate has never exceeded 15%, and the fatality rate has never been above a fraction of 1%.
Corona is a common cold virus and was identified more than 50 years ago.
Most of the people living in the USA have had at least one Corona virus common cold, and more than one if you live on the West Coast.
But, suddenly, a deadly Corona virus emerges, out of no where, and in spite of a massive vaccination effort, the virus is becoming more contagious and more deadly?
Sorry, that narrative does not make sense to me.
I no longer have any trust in the competence or the honesty of the CDC and its supporters.