An interesting observation has been you feel real good, like you're turning a corner; then die.
She's 95, her husband gone (lifer couples often die close to each other) + she has the plague now and it affects everyone differently.
So we'll see.
Pandemic 2020
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She's 95, her husband gone (lifer couples often die close to each other) + she has the plague now and it affects everyone differently.
So we'll see.
DIY-HP-LED
Well-Known Member
Got a COVID Booster? You Probably Won't Need Another for a Long Time
As people across the world grapple with the prospect of living with the coronavirus for the foreseeable future, one question looms large: How soon before they need yet another shot? Not for many months, and perhaps not for years, according to a flurry of new studies. Three doses of a COVID...
As people across the world grapple with the prospect of living with the coronavirus for the foreseeable future, one question looms large: How soon before they need yet another shot?
Not for many months, and perhaps not for years, according to a flurry of new studies.
Three doses of a COVID vaccine — or even just two — are enough to protect most people from serious illness and death for a long time, the studies suggest.
“We’re starting to see now diminishing returns on the number of additional doses,” said John Wherry, director of the Institute for immunology at the University of Pennsylvania. Although people who are over 65 or at high risk of illness may benefit from a fourth vaccine dose, it may be unnecessary for most people, he added.
Federal health officials including Dr. Anthony Fauci, the Biden administration’s top COVID adviser, have also said that they are unlikely to recommend a fourth dose before the fall.
The omicron variant can dodge antibodies — immune molecules that prevent the virus from infecting cells — produced after two doses of a COVID vaccine. But a third shot of the mRNA vaccines made by Pfizer-BioNTech or by Moderna prompts the body to make a much wider variety of antibodies, which would be difficult for any variant of the virus to evade, according to the most recent study.
The diverse repertoire of antibodies produced should be able to protect people from new variants, even those that differ significantly from the original version of the virus, the study suggests.
“If people are exposed to another variant like omicron, they now got some extra ammunition to fight it,” said Dr. Julie McElrath, an infectious disease physician and immunologist at Fred Hutchinson Cancer Research Center in Seattle.
What’s more, other parts of the immune system can remember and destroy the virus over many months if not years, according to at least four studies published in top-tier journals over the past month.
Specialized immune cells called T cells produced after immunization by four brands of COVID vaccine — Pfizer-BioNTech, Moderna, Johnson & Johnson and Novavax — are about 80% as powerful against omicron as other variants, the research found. Given how different omicron’s mutations are from previous variants, it is very likely that T cells would mount a similarly robust attack on any future variant as well, researchers said.
This matches what scientists have found for the SARS coronavirus, which killed nearly 800 people in a 2003 epidemic in Asia. In people exposed to that virus, T cells have lasted more than 17 years. Evidence so far indicates that the immune cells for the new coronavirus — sometimes called memory cells — may also decline very slowly, experts said.
“Memory responses can last for ages,” said Wendy Burgers, an immunologist at the University of Cape Town who led one of the studies, published in the journal Nature. “Potentially, the T-cell response is extremely long lived.”
Throughout the pandemic, a disproportionate amount of research attention has gone to antibodies, the body’s first line of defense against a virus. That is partly because these molecules are relatively easy to study. They can be measured from a drop of blood.
Analyzing immune cells, by contrast, requires milliliters of blood, skill, specialized equipment — and a lot of time. “It’s orders of magnitude slower and more laborious,” Burgers said.
Few labs have the wherewithal to study these cells, and their findings lag weeks behind those on antibodies. Perhaps as a result, scientists have frequently overlooked the importance of other parts of the immune system, experts said.
“Most people don’t even know what they are — a lot of doctors and scientists are not completely clear what a T cell is,” said Dr. Dan Barouch, a virus expert at Beth Israel Deaconess Medical Center in Boston who led one of the T-cell studies.
“Fundamentally, I would argue that T cells are probably more important than what many people have given them credit for,” Barouch said.
Antibodies spike after every shot of vaccine — or after each exposure to the virus — and inevitably decline within a few weeks to months.
Waning antibody levels after two vaccine doses prompted federal officials to recommend boosters for everyone older than 12. The extra shots fortified antibody levels and helped to contain omicron’s spread, but they too appear to lose some of their ability to prevent infections within four months, according to recent data from the Centers for Disease Control and Prevention.
Antibodies recognize two or three key parts of the spike protein, a protrusion on the outside of the coronavirus that allows it to latch on to human cells. But T cells detect many more parts of the spike, and so are less likely to fail when the virus gains mutations in some of them.
Vaccines also encode a memory of the virus in B cells, which can churn out fresh batches of antibodies within four or five days after a new exposure to the virus.
This dual punch of T and B cells help explain why many people who received two or even three doses of vaccine could still be infected with the omicron variant, but only a small percentage became seriously ill.
“You will see a decrease of the antibody levels over time, but if memory B cells are still there, and memory T cells are still there, they can kick back into action relatively quickly,” said Alessandro Sette, an immunologist at the La Jolla Institute for Immunology who led a new study of T cells published in Cell.
Memory B cells become increasingly sophisticated over time, and they learn to recognize a diverse set of viral genetic sequences. The longer they have to practice, the broader the range of virus variants they can thwart.
Researchers showed last year that the elite school inside of lymph nodes where the B cells train, called the germinal center, remains active for at least 15 weeks after the second dose of a COVID vaccine. In an updated study published in the journal Nature, the same team showed that six months after vaccination, memory B cells continue to mature, and the antibodies they produce keep gaining the ability to recognize new variants.
“Those antibodies at six months are better binders and more potent neutralizers than the ones that are produced one month after immunization,” said Ali Ellebedy, an immunologist at Washington University in St. Louis who led the study.
In the newest study, another team showed that a third shot creates an even richer pool of B cells than the second shot did, and the antibodies they produce recognize a broader range of variants. In laboratory experiments, these antibodies were able to fend off the beta, delta and omicron variants. In fact, more than half of the antibodies seen one month after a third dose were able to neutralize omicron, even though the vaccine was not designed for that variant, the study found.
“If you’ve had a third dose, you’re going to have a rapid response that’s going to have quite a bit of specificity for omicron, which explains why people that have had a third dose do so much better,” said Michel Nussenzweig, an immunologist at Rockefeller University who led the study.
Memory cells produced after infection with the coronavirus, rather than by the vaccines, seem less potent against the omicron variant, according to a study published last month in Nature Medicine. Immunity generated by infection “varies quite a lot, while the vaccine response is much more consistently good,” said Marcus Buggert, an immunologist at the Karolinska Institute in Sweden who led the study.
Although most people, vaccinated or not, show only a small drop in their T cell response against omicron, about 1 in 5 had “significant reductions of their responses” of about 60%, Buggert said. The differences are most likely because of their underlying genetic makeup, he said.
Still, the recent studies suggest that in most people, the immunity gained from infection or vaccination will hold up for a long while. Even if mutations in new variants change some of the viral regions that T cells recognize, there would still be enough others to maintain a reasonably strong immune response, experts said.
One big unknown is how slowly the T cells may decline, and whether two doses of vaccine can create a long-lasting response, or if instead people would need three — as some experts have suggested — to cement immune memory.
“That’s a question that we don’t know the answer to yet,” Burgers said. “Those are the kind of studies that we’re going to need to do.”
DIY-HP-LED
Well-Known Member
Health Officials Warily Eye Rising New BA.2 Omicron Strain
Cases of the omicron subvariant are increasing, but the health impact is still unclear.
Health Officials Warily Eye Rising New BA.2 Omicron Strain
Cases of the omicron subvariant are increasing, but the health impact is still unclear.
Health officials are keeping a sharp eye on the COVID-19 omicron subvariant BA.2, which appears to be more contagious than the current BA.1 strain — but its health impacts are still unclear.
A new World Health Organization study reported that even as COVID-19 cases are falling, BA.2 accounted for 21.5% of all new omicron cases analyzed worldwide in the first week of February. (Omicron cases accounted for more than 98% of sequenced samples around the globe the previous 30 days.)
BA.2 accounted for the majority of cases a week ago in 10 countries, including Denmark, India, China, Guam and the Philippines.
Southeast Asia had the highest prevalence of BA.2 (44.7%), and North and South America had the lowest (1%).
But the subvariant’s health impacts are still unknown. In some countries where BA.2 is spreading, hospitalizations are still decreasing.
A recent study in Japan using hamsters, which hasn’t yet been peer reviewed, found BA.2 was both more transmissible and more pathogenic.
Epidemiologist Eric Feigl-Ding, a senior fellow of the Federation of American Scientists, called the findings “worrisome” and said WHO should upgrade the strain to a “variant of concern.”
But critics cautioned that animal studies are difficult to translate to humans and that so far the increasing number of BA.2 cases doesn’t appear to be boosting serious health effects.
Jeremy Kamil, associate professor of microbiology and immunology at Louisiana State University Health Shreveport, pointed out to Newsweek that the real test is happening in the world’s population and evidently “disease severity is considerably less than previously.”
He also noted that immunity to BA.1 will “mitigate against, and in most cases fully protect, people from BA.2 infection in the near term.”
captainmorgan
Well-Known Member
Bird flu is now spreading in poultry on the east coast and spreading to more farms in the midwest, not good. Even if it doesn't jump to humans the supply chain will be impacted by the culls.
Sativied
Well-Known Member
Covid cases dropped 37% in a week in NL. R rate dropped to 0.83. Hospitalizations dropped 10% in a week. Despite everything being open again.
The number of new daily cases is very similar to the US, but the US has a 20x larger population. Meaning relatively we have 20x as many cases. That’s a lot… Yet in absolute numbers, we have 40x less daily deaths. Relatively, in the US 2x as many infected people die from covid than here. We do a lot of testing though, maybe there are more cases the US which would effect the numbers above but sure seems like vaccination and boosters are a way out. Nothing significant about subvariants.
The number of new daily cases is very similar to the US, but the US has a 20x larger population. Meaning relatively we have 20x as many cases. That’s a lot… Yet in absolute numbers, we have 40x less daily deaths. Relatively, in the US 2x as many infected people die from covid than here. We do a lot of testing though, maybe there are more cases the US which would effect the numbers above but sure seems like vaccination and boosters are a way out. Nothing significant about subvariants.
captainmorgan
Well-Known Member
Doctors working in the specialty of alzheimers are reporting many young patients are being diagnosed with early onset alzheimers, they are also long covid sufferers.
captainmorgan
Well-Known Member
I'm seeing covid damage close up with two friends that got it early on, both were in their early 70's and in pretty good health and not obese. The wife had the more severe case and was hospitalized twice and had a oxygen machine at home for months, the husbands case seemed milder, more like a bad flu that lasted a couple weeks, he seemed to recover a lot quicker, she took 6 months to seem anything like her old self. Now it's the opposite, she has slowly gotten better and he has slowly gone down hill. Since he's recovered from covid he's had a series of mini strokes that doctors can't explain why and he's had two mild heart attacks and now they want to put in a pacemaker. He's lost his short term memory and needs to be supervised along with blood pressure and heart rate problems. She needs knee surgery but has not been able to get it done, the first year after covid she had high ddimer numbers, related to blood clots but her numbers are finally low enough for surgery. He's scheduled soon and her surgery in April, bit worried for both of them going into surgery with all the covid damage.
captainmorgan
Well-Known Member
A central role for amyloid fibrin microclots in long COVID/PASC: origins and therapeutic implications - PubMed
Post-acute sequelae of COVID (PASC), usually referred to as 'Long COVID' (a phenotype of COVID-19), is a relatively frequent consequence of SARS-CoV-2 infection, in which symptoms such as breathlessness, fatigue, 'brain fog', tissue damage, inflammation, and coagulopathies (dysfunctions of the...
DIY-HP-LED
Well-Known Member
Nova Scotia Fully Lifting COVID-19 Restrictions March 21, 2022 | Nova Scotia Buzz
From Health & Wellness: —— Nova Scotia is moving up the timeline for easing public health restrictions and will end all restrictions on March 21. “The restrictions put in place during the COVID-19 pandemic are a balancing act
www.nsbuzz.ca
Roger A. Shrubber
Well-Known Member
i hope we aren't jumping the gun on a huge scale...but snowflakes are crying about masks and the great huge harpoon needles they don't want to get stuck with...Nova Scotia Fully Lifting COVID-19 Restrictions March 21, 2022 | Nova Scotia Buzz
From Health & Wellness: —— Nova Scotia is moving up the timeline for easing public health restrictions and will end all restrictions on March 21. “The restrictions put in place during the COVID-19 pandemic are a balancing act
but what can you do? wear a mask on your own, and try to avoid people till it is obvious it's not escalating anymore...
captainmorgan
Well-Known Member
In another year or two many of the anti masker/vaxers will be to sick or dead from repeated covid infections to cause as much trouble.
Heart-disease risk soars after COVID — even with a mild case
Massive study shows a long-term, substantial rise in risk of cardiovascular disease, including heart attack and stroke, after a SARS-CoV-2 infection.
www.nature.com
It comes in through respiration and effects your circulatory system.
DIY-HP-LED
Well-Known Member
Just got a call from a kid I drove to school the other day, she said she tested positive for covid. I got boosted a little over a month ago, so I guess if I'm gonna get it, now would be as good a time as any. I've got a couple of rapid tests being dropped off by a friend incase I should feel like shit.i hope we aren't jumping the gun on a huge scale...but snowflakes are crying about masks and the great huge harpoon needles they don't want to get stuck with...
but what can you do? wear a mask on your own, and try to avoid people till it is obvious it's not escalating anymore...
hanimmal
Well-Known Member
Wish you the best man.
injinji
Well-Known Member
Good luck.
injinji
Well-Known Member
Covid is still kicking my brother in law's ass. He is back home, but Sister took him to the doctor this week, and they had help him into the office. She has pushed back her Denver trip another week.
And the weekend guy at work is starting to feel better. The maintenance guy and I are covering for him again this weekend. I'm hoping he will be back by next weekend.
And the weekend guy at work is starting to feel better. The maintenance guy and I are covering for him again this weekend. I'm hoping he will be back by next weekend.
captainmorgan
Well-Known Member
Sanofi and GSK have submitted a new covid vaccine for approval, it's based on one of the older vaccine technologies.
captainmorgan
Well-Known Member
We gave covid to the deer and they mutated it and gave it back in Ontario, this area is close to me.
www.biorxiv.org
Highly divergent white-tailed deer SARS-CoV-2 with potential deer-to-human transmission
Wildlife reservoirs of SARS-CoV-2 can lead to viral adaptation and spillback from wildlife to humans ([Oude Munnink et al., 2021][1]). In North America, there is evidence of spillover of SARS-CoV-2 from humans to white-tailed deer ( Odocoileus virginianus ), but no evidence of transmission from...
captainmorgan
Well-Known Member
It appears the CDC thinks too much covid data scares people so they are deliberately hiding it now.
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