Government
9 reasons you can be optimistic that a vaccine for COVID-19 will be widely available in 2021
9 reasons you can be optimistic that a vaccine for COVID-19 will be widely available in 2021
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As fall approaches rapidly, many are wondering if the race for a vaccine will bear fruit as early as January 2021.
I am a physician-scientist and infectious diseases specialist at the University of Virginia, where I care for patients and conduct research into COVID-19. I am occasionally asked how I can be sure that researchers will develop a successful vaccine to prevent COVID-19. After all, we still don’t have one for HIV, the virus that causes AIDS.
Here is where the current research stands, where I think we will be in five months and why you can be optimistic about the delivery of a COVID-19 vaccine.
1. Human immune system cures COVID-19
In as many as 99% of all COVID-19 cases, the patient recovers from the infection, and the virus is cleared from the body.
Some of those who have had COVID-19 may have low levels of virus in the body for up to three months after infection. But in most cases these individuals can no longer transmit the virus to other people 10 days after first becoming sick.
It should therefore be much easier to make a vaccine for the new coronavirus than for infections such as HIV where the immune system fails to cure it naturally. SARS-CoV-2 doesn’t mutate the way that HIV does, making it a much easier target for the immune system to subdue or for a vaccine to control.
2. Antibodies targeting spike protein prevent infection
A vaccine will protect, in part, by inducing the production of antibodies against the spike protein on the surface of SARS-CoV-2, the virus that causes COVID-19.
The virus needs the spike protein to attach to and enter human cells to reproduce. Researchers have shown that antibodies, like those made by the human immune system, bind to the spike protein, neutralize it and prevent the coronavirus from infecting cells in laboratory culture.
Vaccines in clinical trials have been shown to raise anti-spike antibodies that block virus infection in cells in the lab.
At least seven companies have developed monoclonal antibodies, laboratory-manufactured antibodies that recognize the spike protein. These antibodies are entering clinical trials to test their ability to prevent infection in those who are exposed, for example, through a household contact.
Monoclonal antibodies may also be effective for treatment. During an infection, a dose of these monoclonal antibodies could neutralize virus, giving the immune system a chance to catch up and manufacture its own antibodies to combat the pathogen.
3. Spike glycoprotein contains multiple targets
The spike protein has many locations where antibodies can bind to and neutralize the virus. That’s good news because with so many vulnerable spots, it will be difficult for the virus to mutate to avoid a vaccine.
Multiple parts of the spike would need to mutate to evade neutralizing anti-spike antibodies. Too many mutations to the spike protein would change its structure and render it incapable of binding to ACE2, which is key to infecting human cells.
4. We know how to make a safe vaccine
Safety of a new COVID-19 vaccine is improved by researchers’ understanding of potential vaccine side effects and how to avoid them.
One side effect seen in the past was antibody-dependent enhancement of infection. This occurs when antibodies don’t neutralize the virus but instead allow it to enter into cells via a receptor intended for antibodies. Researchers have found that by immunizing with the spike protein, high levels of neutralizing antibodies can be produced. This lessens the risk of enhancement.
A second potential problem posed by some vaccines is an allergic reaction that causes inflammation in the lung, as was seen in individuals who received a respiratory syncytial virus vaccine in the 1960s. This is dangerous because inflammation in the lung air spaces can make it difficult to breathe. However, researchers have now learned how to design vaccines to avoid this allergic response.
5. Several different vaccines in development
The U.S. government is supporting the development of several different vaccines via Operation Warp Speed.
The goal of Operation Warp Speed is to deliver 300 million doses of a safe and effective vaccine by January 2021.
The U.S. government is making a major investment, committing US$8 billion to seven different COVID-19 vaccines.
By supporting multiple COVID-19 vaccines, the government is hedging its bets. Only one of these vaccines needs to prove safe and effective in clinical trials for a COVID-19 vaccine to be made available to Americans in 2021.
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6. Vaccines passing through phase I and II trials
Phase I and phase II trials test if a vaccine is safe and induces an immune response. Already the results to date from three different vaccine trials are promising, triggering the production of anti-spike neutralizing antibodies levels that are two- to four-fold higher than those seen in people who have recovered from COVID-19.
Moderna, Oxford and Chinese company CanSino have all demonstrated the safety of their vaccines in phase I and phase II trials.
7. Phase III clinical trials are underway
During a phase III trial, the final step in vaccine development process, the vaccine is tested on tens of thousands of individuals to determine if it works to prevent infection with SARS-CoV-2, and that it is safe.
The vaccine produced by Moderna and NIH and the vaccine from Oxford-AstraZeneca began phase III trials in July. Other COVID-19 vaccines will be starting phase III within weeks.
8. Accelerating vaccine production and deployment
Operation Warp Speed is paying for the production of millions of doses of vaccines and supporting vaccine manufacturing at an industrial scale even before researchers have demonstrated vaccine efficacy and safety.
The advantage of this strategy is that once a vaccine is proven safe in phase III trials, a stockpile of it will already exist and it can be distributed immediately without compromising full assessment of safety and efficacy.
This is a more prudent approach than that of Russia, which is vaccinating the public with a vaccine before it has been shown to be safe and effective in phase III.
9. Vaccine distributors are being contracted now
McKesson Corp., the largest vaccine distributor in the U.S., has already been contracted by the CDC to distribute a COVID-19 vaccine to sites – including clinics and hospitals – where the vaccine will be administered.
I believe that it is realistic that we will know sometime in late 2020 whether some COVID-19 vaccines are safe, exactly how effective they are and which ones should be used to vaccinate the U.S. population in 2021.
William Petri receives research grant funding from the NIH and the Bill and Melinda Gates Foundation.
Government
Low Iron Levels In Blood Could Trigger Long COVID: Study
Low Iron Levels In Blood Could Trigger Long COVID: Study
Authored by Amie Dahnke via The Epoch Times (emphasis ours),
People with inadequate…
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Authored by Amie Dahnke via The Epoch Times (emphasis ours),
People with inadequate iron levels in their blood due to a COVID-19 infection could be at greater risk of long COVID.
A new study indicates that problems with iron levels in the bloodstream likely trigger chronic inflammation and other conditions associated with the post-COVID phenomenon. The findings, published on March 1 in Nature Immunology, could offer new ways to treat or prevent the condition.
Long COVID Patients Have Low Iron Levels
Researchers at the University of Cambridge pinpointed low iron as a potential link to long-COVID symptoms thanks to a study they initiated shortly after the start of the pandemic. They recruited people who tested positive for the virus to provide blood samples for analysis over a year, which allowed the researchers to look for post-infection changes in the blood. The researchers looked at 214 samples and found that 45 percent of patients reported symptoms of long COVID that lasted between three and 10 months.
In analyzing the blood samples, the research team noticed that people experiencing long COVID had low iron levels, contributing to anemia and low red blood cell production, just two weeks after they were diagnosed with COVID-19. This was true for patients regardless of age, sex, or the initial severity of their infection.
According to one of the study co-authors, the removal of iron from the bloodstream is a natural process and defense mechanism of the body.
But it can jeopardize a person’s recovery.
“When the body has an infection, it responds by removing iron from the bloodstream. This protects us from potentially lethal bacteria that capture the iron in the bloodstream and grow rapidly. It’s an evolutionary response that redistributes iron in the body, and the blood plasma becomes an iron desert,” University of Oxford professor Hal Drakesmith said in a press release. “However, if this goes on for a long time, there is less iron for red blood cells, so oxygen is transported less efficiently affecting metabolism and energy production, and for white blood cells, which need iron to work properly. The protective mechanism ends up becoming a problem.”
The research team believes that consistently low iron levels could explain why individuals with long COVID continue to experience fatigue and difficulty exercising. As such, the researchers suggested iron supplementation to help regulate and prevent the often debilitating symptoms associated with long COVID.
“It isn’t necessarily the case that individuals don’t have enough iron in their body, it’s just that it’s trapped in the wrong place,” Aimee Hanson, a postdoctoral researcher at the University of Cambridge who worked on the study, said in the press release. “What we need is a way to remobilize the iron and pull it back into the bloodstream, where it becomes more useful to the red blood cells.”
The research team pointed out that iron supplementation isn’t always straightforward. Achieving the right level of iron varies from person to person. Too much iron can cause stomach issues, ranging from constipation, nausea, and abdominal pain to gastritis and gastric lesions.
1 in 5 Still Affected by Long COVID
COVID-19 has affected nearly 40 percent of Americans, with one in five of those still suffering from symptoms of long COVID, according to the U.S. Centers for Disease Control and Prevention (CDC). Long COVID is marked by health issues that continue at least four weeks after an individual was initially diagnosed with COVID-19. Symptoms can last for days, weeks, months, or years and may include fatigue, cough or chest pain, headache, brain fog, depression or anxiety, digestive issues, and joint or muscle pain.
Government
Walmart joins Costco in sharing key pricing news
The massive retailers have both shared information that some retailers keep very close to the vest.
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As we head toward a presidential election, the presumed candidates for both parties will look for issues that rally undecided voters.
The economy will be a key issue, with Democrats pointing to job creation and lowering prices while Republicans will cite the layoffs at Big Tech companies, high housing prices, and of course, sticky inflation.
The covid pandemic created a perfect storm for inflation and higher prices. It became harder to get many items because people getting sick slowed down, or even stopped, production at some factories.
Related: Popular mall retailer shuts down abruptly after bankruptcy filing
It was also a period where demand increased while shipping, trucking and delivery systems were all strained or thrown out of whack. The combination led to product shortages and higher prices.
You might have gone to the grocery store and not been able to buy your favorite paper towel brand or find toilet paper at all. That happened partly because of the supply chain and partly due to increased demand, but at the end of the day, it led to higher prices, which some consumers blamed on President Joe Biden's administration.
Biden, of course, was blamed for the price increases, but as inflation has dropped and grocery prices have fallen, few companies have been up front about it. That's probably not a political choice in most cases. Instead, some companies have chosen to lower prices more slowly than they raised them.
However, two major retailers, Walmart (WMT) and Costco, have been very honest about inflation. Walmart Chief Executive Doug McMillon's most recent comments validate what Biden's administration has been saying about the state of the economy. And they contrast with the economic picture being painted by Republicans who support their presumptive nominee, Donald Trump.
Image source: Joe Raedle/Getty Images
Walmart sees lower prices
McMillon does not talk about lower prices to make a political statement. He's communicating with customers and potential customers through the analysts who cover the company's quarterly-earnings calls.
During Walmart's fiscal-fourth-quarter-earnings call, McMillon was clear that prices are going down.
"I'm excited about the omnichannel net promoter score trends the team is driving. Across countries, we continue to see a customer that's resilient but looking for value. As always, we're working hard to deliver that for them, including through our rollbacks on food pricing in Walmart U.S. Those were up significantly in Q4 versus last year, following a big increase in Q3," he said.
He was specific about where the chain has seen prices go down.
"Our general merchandise prices are lower than a year ago and even two years ago in some categories, which means our customers are finding value in areas like apparel and hard lines," he said. "In food, prices are lower than a year ago in places like eggs, apples, and deli snacks, but higher in other places like asparagus and blackberries."
McMillon said that in other areas prices were still up but have been falling.
"Dry grocery and consumables categories like paper goods and cleaning supplies are up mid-single digits versus last year and high teens versus two years ago. Private-brand penetration is up in many of the countries where we operate, including the United States," he said.
Costco sees almost no inflation impact
McMillon avoided the word inflation in his comments. Costco (COST) Chief Financial Officer Richard Galanti, who steps down on March 15, has been very transparent on the topic.
The CFO commented on inflation during his company's fiscal-first-quarter-earnings call.
"Most recently, in the last fourth-quarter discussion, we had estimated that year-over-year inflation was in the 1% to 2% range. Our estimate for the quarter just ended, that inflation was in the 0% to 1% range," he said.
Galanti made clear that inflation (and even deflation) varied by category.
"A bigger deflation in some big and bulky items like furniture sets due to lower freight costs year over year, as well as on things like domestics, bulky lower-priced items, again, where the freight cost is significant. Some deflationary items were as much as 20% to 30% and, again, mostly freight-related," he added.
bankruptcy pandemic trumpGovernment
Walmart has really good news for shoppers (and Joe Biden)
The giant retailer joins Costco in making a statement that has political overtones, even if that’s not the intent.
Share this:
As we head toward a presidential election, the presumed candidates for both parties will look for issues that rally undecided voters.
The economy will be a key issue, with Democrats pointing to job creation and lowering prices while Republicans will cite the layoffs at Big Tech companies, high housing prices, and of course, sticky inflation.
The covid pandemic created a perfect storm for inflation and higher prices. It became harder to get many items because people getting sick slowed down, or even stopped, production at some factories.
Related: Popular mall retailer shuts down abruptly after bankruptcy filing
It was also a period where demand increased while shipping, trucking and delivery systems were all strained or thrown out of whack. The combination led to product shortages and higher prices.
You might have gone to the grocery store and not been able to buy your favorite paper towel brand or find toilet paper at all. That happened partly because of the supply chain and partly due to increased demand, but at the end of the day, it led to higher prices, which some consumers blamed on President Joe Biden's administration.
Biden, of course, was blamed for the price increases, but as inflation has dropped and grocery prices have fallen, few companies have been up front about it. That's probably not a political choice in most cases. Instead, some companies have chosen to lower prices more slowly than they raised them.
However, two major retailers, Walmart (WMT) and Costco, have been very honest about inflation. Walmart Chief Executive Doug McMillon's most recent comments validate what Biden's administration has been saying about the state of the economy. And they contrast with the economic picture being painted by Republicans who support their presumptive nominee, Donald Trump.
Image source: Joe Raedle/Getty Images
Walmart sees lower prices
McMillon does not talk about lower prices to make a political statement. He's communicating with customers and potential customers through the analysts who cover the company's quarterly-earnings calls.
During Walmart's fiscal-fourth-quarter-earnings call, McMillon was clear that prices are going down.
"I'm excited about the omnichannel net promoter score trends the team is driving. Across countries, we continue to see a customer that's resilient but looking for value. As always, we're working hard to deliver that for them, including through our rollbacks on food pricing in Walmart U.S. Those were up significantly in Q4 versus last year, following a big increase in Q3," he said.
He was specific about where the chain has seen prices go down.
"Our general merchandise prices are lower than a year ago and even two years ago in some categories, which means our customers are finding value in areas like apparel and hard lines," he said. "In food, prices are lower than a year ago in places like eggs, apples, and deli snacks, but higher in other places like asparagus and blackberries."
McMillon said that in other areas prices were still up but have been falling.
"Dry grocery and consumables categories like paper goods and cleaning supplies are up mid-single digits versus last year and high teens versus two years ago. Private-brand penetration is up in many of the countries where we operate, including the United States," he said.
Costco sees almost no inflation impact
McMillon avoided the word inflation in his comments. Costco (COST) Chief Financial Officer Richard Galanti, who steps down on March 15, has been very transparent on the topic.
The CFO commented on inflation during his company's fiscal-first-quarter-earnings call.
"Most recently, in the last fourth-quarter discussion, we had estimated that year-over-year inflation was in the 1% to 2% range. Our estimate for the quarter just ended, that inflation was in the 0% to 1% range," he said.
Galanti made clear that inflation (and even deflation) varied by category.
"A bigger deflation in some big and bulky items like furniture sets due to lower freight costs year over year, as well as on things like domestics, bulky lower-priced items, again, where the freight cost is significant. Some deflationary items were as much as 20% to 30% and, again, mostly freight-related," he added.
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