Month: January 2021

Categories : COVIDTags :

COVID Cases Surge in Africa

On By ModernMedia

Over the past month, Africa has recorded the highest growth in new infections, with a 13% growth over the last week. With only two million cases and 45 000 deaths, Sub-Saharan Africa still only has a small part of the caseload of other regions. 

Dr John Nkengasong, who heads the African Centres for Disease Control (CDC), said: “I think this is serious, the second wave is extremely aggressive.”  The latest surge is thought to be driven by the more transmissible South African variant, known as 501Y.V2. President Cyril Ramaphosa said this variant, found in 90% of new cases, was likely responsible for the country’s latest surge, which has caused morgues to fill up and hospitals to run short of staff and critical resources such as oxygen.  North of the border, Zimbabwe this week started a month-long lockdown to curb a rise in new cases and protect its own overburdened health care system. Nearly two million Zimbabweans live in SA and regularly travel and forth, potentially spreading the virus.

Rashida Ferrand, a London School of Hygiene and Tropical Medicine professor working at the Parirenyatwa Group of Hospitals in the Zimbabwean capital Harare told Reuters that there was “a pretty high likelihood” that the new SA strain of the virus identified could be circulating in Zimbabwe.

Lockdowns may now not be enough to control the spread of the new variant – certain studies of the similar, highly transmissible UK variant suggests that it may now spread too fast for its R (reproduction) value to be brought below 1, or otherwise cause a much slower decline in infections. Fortunately, it seems that lockdown measures in the UK are having some effect. 
Meanwhile, there are concerns that the SA variant may also be able to evade the protection of current vaccines, according to new research – but that has not been peer reviewed yet. Research in SA on the question is expected to provide answers. Meanwhile, 12 gene sequencing laboratories are being geared up around Africa to track the spread of the virus variants, and some genome sequencing work has been done since December, but not enough to paint a clear picture.

Source: The Telegraph

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Medical Aid Schemes to Share Cost of Nationwide Vaccination

On By ModernMedia

As arrangements are being made to pay for the COVID vaccination programme for South Africa, medical aid schemes are expected to contribute to the cost towards ensuring at least 67% of the population receives a vaccine, which is the minimum number to establish herd immunity.

Across South Africa, there are some 9 million medical aid beneficiaries, making up some 16% of the population and who collectively spent R186 billion last year on healthcare. The total cost of providing sufficient vaccines for the South African population is thought to range from R5 billion to R20 billion, depending on whether the vaccine is simply bought for the commercial price or whether the distribution and administration costs are factored in as well.

Discussions into paying for the mass vaccinations have suggested that mass-employers, such as mines, ought to contribute  This week, the Council for Medical Schemes (CMS) confirmed that vaccination would be a minimum prescribed benefit, so this will not be paid for out of medical savings.”The CMS acknowledges that there may be an additional cost burden to medical schemes for the provision of the vaccine, but this is not expected to be prohibitively high,” the body said. “In addition, industry associations have assured the CMS that vaccine costs can be absorbed by most medical schemes.”

South Africa’s vaccine source is not yet clear, although President Cyril Ramaphosa has hinted that Canada may share its excess vaccine stock. Canada currently has enough vaccine pre-purchase agreements to vaccinate its population five times over.

Source: Business Insider

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Amazon to Enter the Health Industry

On By ModernMedia

With the launch of Amazon Pharmacy in the US last November, online pharmacy companies are worried about the industry giant Amazon’s entry into the healthcare industry.

The head of Quick Meds, an online pharmacy firm that had only recently been established, believes it will have a huge impact on the industry.

“I’m worried,” he said. “They’ll have a massive marketing budget, and they’ll definitely take a sizeable chunk out of every other pharmacy on the market. There will be closures as a direct result of it.”

Pharmacies have complex, inefficient supply chains which the online retail giant could outcompete with its massive, streamlined operations. Amazon is already purchasing its first fleet of aircraft to compete directly with large courier companies like FedEx, taking advantage of plummeting aircraft prices in the wake of the pandemic.

Scott Galloway, professor of marketing at NYU Stern, entrepreneur and author of Post Corona: From Crisis to Opportunity, believes that consumers will benefit in the short and medium term.”For the most part of Amazon’s history, as a consumer you’re getting products for near cost or sometimes even below cost and that has just been an incredible boon for consumers and shareholders,” he said.

The company would use information from its other business areas to create a database of each customer’s health, enabling it to target goods and services.

“With their new wearable Amazon Halo, the company can build a 3D image of their consumers and they can then combine this with the foods you eat through Whole Foods, data from Amazon Prime and Alexa, and information such as your post code, relationship status, demographic data,” said Mr Galloway. Compared to the largely reactive medical industry, where consumers seek out medical services, this is a sea change.

“They can use this to offer proactive healthcare services,” he said.

Source: BBC News

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Genetic Basis for Why Lithium is Effective for Only Some

On By ModernMedia

Lithium was the first effective mood stabiliser for bipolar disorder (BD) and still the first-line treatment, but it is effective only in about 30% of patients, while the remainder are unresponsive. A new study implicates the decreased activation of a certain gene.

The study shows that decreased activation of a gene called LEF1 disrupts ordinary neuronal function and promotes hyperexcitability in brain cells—a hallmark of BD. The findings could lead to development of a new drug target for BD as well as a biomarker for lithium nonresponsiveness.

“Only one-third of patients respond to lithium with disappearance of the symptoms,” says Renata Santos, co-first author on the study. “We were interested in the molecular mechanisms behind lithium resistance, what was blocking lithium treatment in nonresponders. We found that LEF1 was deficient in neurons derived from nonresponders. We were excited to see that it was possible to increase LEF1 and its dependent genes, making it a new target for therapeutic intervention in BD.”

The study built on a previous one which discovered differences in the neurons of those with lithium unresponsiveness.

Using stem cell technology, the team grew neurons sampled from patients’ blood, who had BD and were responsive or unresponsive to lithium, and from normal patients. They compared the genetic characteristics and behaviour of those neurons.Lithium enables beta-catenin to pair with LEF1 to promote neural regulation in the normal controls and lithium responders.

Administration of valproic acid, a typical treatment for non-responders, increased LEF1 levels as well as activation of related genes. Silencing the LEF1 gene also deactivated related genes.”When we silenced the LEF1 gene, the neurons became hyperexcitable,” says Shani Stern, co-first author on the study. “And when we used valproic acid, expression of LEF1 increased, and we lowered the hyperexcitability. That shows there is a causative relationship, and that’s why we think LEF1 may be a possible target for drug therapy.”

The team wants to look at other types of cells, such as astrocytes, to better understand the role of LEF1 in the bipolar neural network.”LEF1 works in various ways in different parts of the body, so you can’t just turn it on everywhere,” said  co-corresponding author Carol Marchettor. “You want to be more specific, either activating LEF1 on a targeted basis or activating downstream genes that are relevant for lithium nonresponsiveness.”

Source: Medical Xpress

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Vitamin D to Treat COVID: No Time for Perfect Evidence

On By ModernMedia

An Op-Ed in MedPage Today highlights the evidence for the potential role of vitamin D in the fight against COVID. Low vitamin D levels are being linked to COVID fatality and ICU admission.

Some 40% of the US population is vitamin D deficient, while in Africa, some 20% are thought to be vitamin D deficient. With South Africa’s seasonal variations, vitamin D levels in adults and children may be adequate in summer and autumn but deficient in the winter, even given its ethnically diverse population.

The article reviews the evidence in favour of and against administering Vitamin D as an acute treatment. Causality can be inferred from correlational data by satisfying various criteria which includes consistency, specificity, temporality, and dose-responsiveness. This same approach was used to draw the link between lung cancer and smoking in 1964.
Studies have shown some striking associations between vitamin D sufficiency and COVID outcomes. In a study of 154 patients, patients with vitamin D deficiency (serum 25-OH-D <20 ng/mL) had a fatality rate of 21%, compared to a rate of 3% for those with higher levels. Firming up the case for causation, there is some randomised experimental data.

In a study of 76 COVID patients in Spain, 1 of 50 of patients who were given open-label calcifediol, a potent vitamin D analogue, were admitted to ICU whilst 13 of 26 who did not receive vitamin D were admitted to ICU.
Nursing homes in France often give vitamin D injections, and a quasi-experimental study showed that only 10% of nursing home residents receiving vitamin D progressed to severe COVID, compared to 31% who were not.

The authors conclude that doctors cannot always wait for perfect evidence as they have a duty of care, and given vitamin D’s safety profile, the evidence for its protective role should be acted upon.
Source: MedPage Today

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Oncologist Forgives $650 000 in Patient Debts

On By ModernMedia

An oncologist in the United States has forgiven $650 000 in patients’ debts. After 30 years of business, Dr Omar Atiq closed down his Arkansas cancer treatment centre last year. He had previously engaged a debt collector company to chase up clients’ outstanding bills.

“Over time I realised that there are people who just are unable to pay,” Dr Atiq said to ABC’s Good Morning America. “So my wife and I, as a family, we thought about it and looked at forgiving all the debt. We saw that we could do it and then just went ahead and did it.”

Dr Atiq is originally from Pakistan, and founded the Arkansas Cancer Clinic in 1991.”We thought there was not a better time to do this than during a pandemic that has decimated homes, people’s lives and businesses and all sorts of stuff,” Dr Atiq said, quoted by the Arkansas Democrat-Gazette.

When sending his Christmas greeting card to patients, he wrote, “The Arkansas Cancer Clinic was proud to serve you as a patient. Although various health insurances pay most of the bills for [the] majority of patients, even the deductibles and co-pays can be burdensome. Unfortunately, that is the way our health care system currently works. The clinic has decided to forego all balances owed to the clinic by its patients. Happy Holidays.”
In the view of the president of the debt collection company he engaged, Dr Atiq is “a very caring individual”.

Bea Cheesman, of RMC of America, said, “He’s always been extremely easy to work with as a client. It’s just a wonderful thing that he and his family did in forgiving this debt because the people with oncology bills do have more challenges than the bulk of the population.”Dr Atiq approached the Arkansas Medical Society to ensure there was nothing improper about the move.

Source:BBC News

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Antibiotic Overuse by Children’s Hospitals Contributing to Antibiotic Resistance

On By ModernMedia

Children’s hospitals may be contributing to antibiotic resistance by overprescription of antibiotics, according to a recent study.

The study, conducted by the University of Alabama at Birmingham (UAB),   found that in 51 children’s hospitals across the United States, rates of antibiotic administration ranged from 22% to 52%. Approximately a quarter of children receiving antibiotics were receiving them incorrectly. This adds to a growing body of evidence that points to antibiotics overuse and misuse by children’s hospitals – which ought to know better.Study co-author, Dr Jason Newland said, “There’s no doubt: We’ve seen some extra use of antibiotics, The impact of the pandemic on antibiotic use will be significant.

“The study’s numbers are likely an underestimate since the research involved 32 children’s hospitals already working together on proper antibiotic use. Newland said the US’ more than 250 children’s hospitals need to improve. Even though COVID fears have reduced the numbers of children’s hospital visits, antibiotics are still being prescribed via telemedicine.

“I hear a lot about antibiotic use for the ‘just in case’ scenarios,” said Dr Joshua Watson, at Nationwide Children’s Hospital in Ohio. “We underestimate the downsides.”

Dr Shannon Ross, an associate professor of paediatrics and microbiology at UAB, said that not all doctors have been taught the correct use of antibiotics. Regarding this overuse, she said, “Many of us don’t realize we’re doing it. It’s sort of not knowing what you’re doing until someone tells you.”
Unnecessary antibiotic use is a problem, and the pandemic “has thrown a little bit of gas on the fire,” said Dr Mark Schleiss, a paediatrics professor at the University of Minnesota Medical School.

“It’s irresponsible,” said Christina Fuhrman, who almost lost her infant daughter to a Clostridium difficile infection, and who now advocates for correct antibiotic use. Along with parents begging for antibiotics in paediatricians’ offices, the situation is “creating a monster.”
Many studies have attested to the rise of C. diff in children, which causes gastrointestinal problems. A 2017 study found that cases of a certain multidrug-resistant Enterobacteriaceae type rose 700% in American children in just eight years. And a steady stream of research points to the stubborn prevalence in kids of the better-known MRSA, or methicillin-resistant Staphylococcus aureus.

“It’s getting more and more worrisome,” said Ross. “We have had patients we have not been able to treat because we’ve had no antibiotics available.”

Source: News-Medical.Net

Journal information: Tribble A, Lee B, Flett K et al. Appropriateness of Antibiotic Prescribing in United States Children’s Hospitals: A National Point Prevalence Survey. Clinical Infectious Diseases. 2020;71(8):e226-e234. doi:10.1093/cid/ciaa036 

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Unmedicated Autism Associated With Substance Abuse

On By ModernMedia

A Taiwanese study has shown that individuals diagnosed with untreated autism spectrum disorder (ASD) have higher rates of substance abuse compared to those on treatment.

The researchers used inpatient and outpatient data of 6 599 individuals with ASD who had at least 3 outpatients visits for ASD, drawn from the Taiwan National Health Insurance Research Database. They found an increased risk of substance use disorder (SUD) among those who were not receiving medication for ASD (adjusted hazard ratio 2.33, 95% CI 1.89-2.87). The risk for drug abuse was three times higher, and the risk for alcohol abuse was two times higher.

Additionally, those with comorbid SUD had over a three times greater risk of death over a follow-up period of 8.1 years.Those taking psychotropic agents had a 40% reduction for SUD risk when taking one agent, and a 63% reduction with a multiagent.

There were several comorbidities of psychiatric disorders seen in patients with ASD, such as intellectual disability, attention deficit hyperactivity disorder, tic disorder, epilepsy, obsessive-compulsive disorder, mood disorder, anxiety disorder, and impulse control disorder. However, individuals with ASD had a higher risk of SUD even compared with matched controls with the same comorbidities. SUD risk was highest with certain comorbidities; untreated ASD with comorbid tic disorder was 6 times higher; with a comorbid impulse control disorder, it was five times higher.

The researchers stated that these are critical findings, but of limited use due to the “umbrella term” of substance use disorder, and further studies will be needed to examine the specific types of drug use amongst individuals with ASD. Future research could investigate whether non-pharmaceutical treatments such as behavioural therapy had the same effect.They conclude that screening  individuals with ASD for SUD is important, given the findings of the study.

Source: MedPage Today

Journal information: Huang J, Yang F, Chien W, et al. Risk of Substance Use Disorder and Its Associations With Comorbidities and Psychotropic Agents in Patients With Autism. JAMA Pediatr. Published online January 04, 2021. doi:10.1001/jamapediatrics.2020.5371

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Brown Fat May Protect Against Multiple Chronic Diseases

On By ModernMedia

Brown fat, which is found around the neck and shoulders, was once thought only to be beneficial to newborns, but has more recently been thought to have beneficial health effects in humans. However, it has been challenging to study since it is so deeply buried.

In mouse models, brown fat is known to be thermogenic, significantly improving glucose and lipid homeostasis, but in humans its role in metabolism and cardiovascular disease was still unclear. The prevalence of brown fat is difficult to measure in humans, since the only noninvasive way to detect it is with expensive PET scans. However, radiologists have to distinguish brown fat from tumours in PET scans, and this provided a valuable resource to establish the prevalence of brown fat in the population. The researchers used 134 529 PET scans of 52 487 patients.

Brown fat was found in some 10% of the population, which may be an underestimate since individuals undergoing the scans were told to avoid cold, exercise and caffeine, which are all known to increase the activity of brown fat.

“For the first time, it reveals a link to lower risk of certain conditions,” said Paul Cohen, Assistant Professor at The Rockefeller University Hospital. “These findings make us more confident about the potential of targeting brown fat for therapeutic benefit.”

Despite this new evidence, exactly how brown fat contributes to health is still unclear, although there are some clues. Brown fat uses glucose to generate energy, and this may help lower blood glucose levels. The role hat brown fat plays in hypertension, which is tightly connected to the hormonal system, is less clear.”We are considering the possibility that brown fat tissue does more than consume glucose and burn calories, and perhaps actually participates in hormonal signaling to other organs,” Cohen says.

The researchers plan to investigate the biology of brown fat, such as by looking for genetic variations to explain why some have it and others do not, which may lead to pharmacological treatments.

“The natural question that everybody has is, ‘What can I do to get more brown fat?'” Cohen said. “We don’t have a good answer to that yet, but it will be an exciting space for scientists to explore in the upcoming years.”

Source: Medical Xpress

Journal information: Becher, T., Palanisamy, S., Kramer, D.J. et al. Brown adipose tissue is associated with cardiometabolic health. Nat Med (2021). doi.org/10.1038/s41591-020-1126-7

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New “Spray-on” Wound Dressing Mimics Skin

On By ModernMedia

A new kind of burn dressing developed by an Israeli company, Nanomedic, is being used in Israel, Europe and India, and applies a flexible dressing without contact.

Called “Spincare”, it is contactless and is sprayed on by an applicator. Normal burn dressings are difficult to apply because they can cause so much pain.The breathable “skin substitute” is flexible, which is important for allowing movement for wound rehabilitation, and is also easy for patients to apply. Unlike traditional wound dressings, it also allows patients to shower, and, being translucent, allows clinicians to inspect the wound without having to remove the dressing.

The technology is based on “electrospinning“, where electricity is applied to a solution to make nanofibres. Electrospinning had mostly been used to produce air filters, but it was only until the 1990s that the technology began to acquire other applications. Though the technology has been used in medical applications before, this is the first time such a device small enough to use at a patient’s bedside has been developed.

It is effective at treating shallow burns, but less effective for deep burns, according to the manufacturer. It also has applications in areas such as facial wound dressings, where traditional bandages are cumbersome, This new technology comes at a time when there is debate in wound care management, as to whether frequent replacement of dressing for checking purposes is in fact counterproductive. This new technology would join other types of wound dressing increasingly being used that require fewer changes.

Source: The Guardian