The Delta variant: updates from the new @PHE_Uk report assets.publishing.service.gov.uk/government/upl…
1st dose vaccine (either AZ or Pfizer) quite protective vs hospitalization
Fully vaxxed vs unvaxxed:
Infections 7.7% vs 67%
Hospitalizations 8% vs 48%
Delta's secondary attack rate is coming down some in the latest dataset. Its enhanced transmission over alpha appears to be more in the 40-60% range
Reinfections by sequencing data: 311/1260 were Delta
This 71-page report is rich. And that 60% of infections are getting sequenced (91% are Delta) is quite impressive.
It makes the output from CDC and the genomic surveillance in the US particularly weak
Here is the latest @CDCgov variant report. It is from May 22 and it's frankly pathetic when you compare it to @PHE_UK, both with respect to it being out of date and the lack of sequencing in the US covid.cdc.gov/covid-data-tra…
Contrast today's @PHE_UK report from genome sequencing (60% of cases) up to 4 days ago -- >60,000 Delta cases with vaccination status and outcomes
Physical activity and the reduction of all-cause mortality, from 2 very large prospective cohorts 1. The relationship is non-linear, suggesting a threshold effect for many types of exercise as seen below
2. Engaging in > 1 type of physical activity was generally correlated with better outcomes compared with 1 type (T1,2,3)
People age 70+ should not be taking aspirin at any dose for prevention. Results of randomized trials show higher risk of all-cause mortality, major bleeding events and deaths from cancer. p 153, SUPER AGERS book
President Trump takes 325 mg aspirin/day. The randomized trials tested 75-81 mg/day. His doctors recommended low-dose aspirin for heart event prevention. That recommendation is ill-founded based upon best evidence in older individuals. nejm.org/doi/full/10.10… academic.oup.com/eurheartj/arti…
As I wrote in SUPER AGERS, the immune system is the key to modulating our aging process and the opportunity to extend healthspan. Today @NatureAging 7 new articles, summarized here, that reinforce its central role nature.com/articles/s4358…
The new special issue @ScienceMagazine features Immunity with 4 outstanding review papers, 5★
Our immune system over the lifespan, sex differences, influence on physiology, and host antiviral defenses science.org/toc/science/cu…
We've learned a lot more about the principal drivers of age-related diseases in the past few weeks. And that leads to a unified model to pull it all together. (open-access)
I review 4 new reports, summarized here: 1. The proteins from senescent cells predict age-related clinical outcomes 2. A new epigenetic age clock connects the dots between aging, the immune system, inflammation and lifestyle factors 3. People with a fast pace of aging had an increased risk of cognitive impairment, age-related diseases, disability, and mortality 4. The Importance of “Immune Resilience” for Healthspan
And present a unified I/I model for what we now know
Most people haven’t heard of this test, which is available in the US. It accurately predicts Alzheimer’s (not just if there’s a risk, but when). It is favorably affected by exercise and likely many other lifestyle factors.
Here’s (almost) everything we know about it. In Ground Truths (link in my profile d/t X-suppression)