Friday, September 10, 2021

Delta Variant: What We Know About the Science | CDC

Delta Variant: What We Know About the Science | CDC: Fully vaccinated people with Delta variant breakthrough infections can spread the virus to others. However, vaccinated people appear to spread the virus for a shorter time: For prior variants, lower amounts of viral genetic material were found in samples taken from fully vaccinated people who had breakthrough infections than from unvaccinated people with COVID-19.

Thursday, September 2, 2021

Why you shouldn't panic about coronavirus 'doomsday variant' headlines - CNET

Why you shouldn't panic about coronavirus 'doomsday variant' headlines - CNET: In short, there's no reason to panic. There's no doomsday variant (we don't name variants this way), and there's little evidence this new mutant strain is worse than delta. "There is no evidence it is particularly transmissible, and it has not been flagged as a variant under interest so far," says Francois Balloux, a computational biologist at University College London. The strain, currently dubbed C.1.2, was first detected in South Africa in May and in the last week has gathered significant attention because of a�preprint study by South African researchers published Aug. 24. Preprints are research articles that haven't yet undergone a peer review process.�

A nice alternative to clickbait headlines surrounding new variants.  

Wednesday, September 1, 2021

WHO warns new mu coronavirus variant could be more vaccine resistant | TheHill

WHO warns new mu coronavirus variant could be more vaccine resistant | TheHill: The Mu variant has a constellation of mutations that indicate potential properties of immune escape. Preliminary data presented to the Virus Evolution Working Group show a reduction in neutralization capacity of convalescent and vaccine sera similar to that seen for the Beta variant, but this needs to be confirmed by further studies," WHO said in its weekly bulletin. Other variants of interest include eta, iota, kappa and lambda. Like mu, lambda was also first detected in South America, in Peru. Iota was first detected in the U.S. in November.

It looks like we'll all be memorizing the Greek alphabet soon.  I hope this doesn't hurt fraternity and sorority branding.

COVID-19 and the Industrial Hygienist

COVID-19 and the Industrial Hygienist:

I did not realize toilets were such a problem.  This is from a page run by the AIHA, who are Industrial Hygienists.

STEVE WELTY:
One unique example would be toilet aerosolization. Although diarrhea does not occur in the majority of COVID-19 cases, the coronavirus has been isolated in stool samples, and numerous studies have demonstrated the ability of biological particles to be aerosolized through toilet flushing. For a virus, a flushing toilet event is like being whipped up in a frothing undercurrent and launched airborne in a water droplet. That droplet quickly evaporates, becoming a “droplet nuclei,” which can stay airborne for hours and also be sucked upwards into the bathroom fan’s exhaust. Toilet-aerosolized droplet nuclei lifted into the breathing zones of unsuspecting individuals can be breathed into their lungs. Studies in the
Journal of Applied Microbiology
(JAM) and the
American Journal of Infection Control
(AJIC) indicate that for seven to twelve flushes later, airborne microbes are still being aerosolized.
For a virus, a flushing toilet event is like being whipped up in a frothing undercurrent and launched airborne in a water droplet. That droplet quickly evaporates, becoming a “droplet nuclei,” which can stay airborne for hours and also be sucked upwards into the bathroom fan’s exhaust. Toilet-aerosolized droplet nuclei lifted into the breathing zones of unsuspecting individuals can be breathed into their lungs. Studies in the
Journal of Applied Microbiology
(JAM) and the
American Journal of Infection Control
(AJIC) indicate that for seven to twelve flushes later, airborne microbes are still being aerosolized.

Monday, August 30, 2021

What Does the Delta Variant Mean for Kids and Covid? | WIRED

What Does the Delta Variant Mean for Kids and Covid? | WIRED

The much bigger problem is how fast Delta moves through an unvaccinated population, Fisman adds. Say that the variant’s arrival means doubling the hospitalization rate for kids with Covid—less than 1 percent of cases in children under 18 before Delta’s arrival, according to the CDC. That’s still a relatively small number. But with a virus now transmitting at a more aggressive clip, the growing denominator—the total number of cases—becomes meaningful. “That means those rare events happen in greater numbers,” Fisman says. “That’s the big worry.”

Evidence mounts that people with breakthrough infections can spread Delta easily

Evidence mounts that people with breakthrough infections can spread Delta easily

Even if you're vaccinated, you can carry the virus to young children and the immunocompromised, potentially killing people.  Let's say there's a healthy person who chose to not get vaccinated because they occupy what I call an "Information Sewer."  Are you so angry at that person's willful ignorance that you're willing to sentence them to death?

A preliminary study has shown that in the case of a breakthrough infection, the Delta variant is able to grow in the noses of vaccinated people to the same degree as if they were not vaccinated at all. The virus that grows is just as infectious as that in unvaccinated people, meaning vaccinated people can transmit the virus and infect others.

What Does the Delta Variant Mean for Kids and Covid? | WIRED

What Does the Delta Variant Mean for Kids and Covid? | WIRED

The largest group is little kids, those under 12, because no vaccine has been authorized for them. But the picture doesn’t get much better in older children. Only a third of kids aged 12 to 15 in the US are fully vaccinated, according to figures gathered by the Centers for Disease Control and Prevention, and the figure remains below average for people in their late teens and twenties. So it’s little surprise that 22 percent of the US cases reported in the third week of August, 180,000 in all, were diagnosed in children, up from a 14 percent share overall since the pandemic began. That weekly number is double what it was at the beginning of the month, and that’s putting strain on pediatric units across the US, especially in places where the highly transmissible Delta variant is raging.

Another good reason to mask up.  You're hurting children.  If you're not masking and distancing, you're hurting children and the immunocompromised.  You're choosing to hurt them. 

Delta Variant: What We Know About the Science | CDC

Delta Variant: What We Know About the Science | CDC : Fully vaccinated people with Delta variant breakthrough infections can spread the viru...