Connect with us

Government

New article clarifies details of COVID-19 respiratory transmission

New article clarifies details of COVID-19 respiratory transmission

Published

on

IMAGE

Credit: ATS

June 22, 2020– In a new article, scientists provide an exhaustive, evidence-based review of how COVID-19 droplets from infected patients spread through the air and describe how health care professionals can protect themselves. This Pulmonary Perspective is published online in the American Thoracic Society’s American Journal of Respiratory and Critical Care Medicine.

In “Coughs and Sneezes: Their Role in Transmission of Respiratory Viral Infections, Including SARS-CoV-2,” Rajiv Dhand, MD, professor and chair, Department of Medicine and associate dean of clinical affairs, University of Tennessee Graduate School of Medicine, along with Jie Li, PhD, RRT, associate professor, Department of Cardiopulmonary Services, Division of Respiratory Care, Rush University Medical Center, describe the various types and sizes of virus-containing droplets present in sneezes and coughs, the locations in the respiratory systems where they deposit, and how certain medical procedures and devices may spread these droplets and the risks for health care professionals.

“The apprehension about the use of aerosolized therapies in COVID-19 patients relates to their potential to spread infectious aerosols,” said Dr. Dhand. “Our recommendations offer a balanced, scientific perspective on the use of such aerosolized therapies in patients infected with SARS-CoV-2, the virus that causes COVID-19.”

Airborne particles may be produced by various aerosol generating procedures (AGPs), such as suctioning or tracheal intubation, as well as by aerosol generators, especially jet nebulizers.

“AGPs such as intubation, bronchoscopy, physiotherapy and suctioning generate potential infectious bioaerosols by provoking coughs and are associated with increased infection rates among employees working in health care,” stated the authors. “In contrast, AGPs such as oxygen therapy, use of humidified high-flow nasal cannula, non-invasive ventilation and manual ventilation via mask are less about ‘generating’ bioaerosols and more about ‘dispersing’ aerosols further away from the patient.”

Drs. Dhand and Li noted that the evidence linking AGPs to spread of viral infections is limited by the low quality of studies on this topic. They also noted that aerosols produced by medical aerosol generators do not contain pathogens unless the aerosol device is contaminated.

The authors make a number of recommendations for reducing the transmission of respiratory tract infections, which are consistent with guidelines from the Centers for Disease Control and Prevention. They include (please see the article for more detail):

  • Avoid procedures that irritate airways and provoke violent coughing and try to reduce exposure to infectious aerosol.
  • If possible, health care providers should stay six feet away from infected patients, especially when the patient is coughing or sneezing.
  • When using a mechanical ventilator, institute barriers to filter the virus or reduce virus dispersion by placing a filter at the exhalation port of the ventilator or connecting a filter to the oxygen mask.
  • For spontaneously breathing patients, placing a surgical mask on the patient’s face or using tissue to cover his or her mouth, especially during coughing, sneezing or talking, may reduce the dispersion distance or viral load.
  • Employ PPE for health care providers.
  • While, ideally, infected patients should be in single rooms to prevent droplet dispersion, it is acceptable for two patients with the same infection that is spread by respiratory droplets to be in the same room.

Dr. Dhand concluded, “Coughs and sneezes create respiratory droplets of variable size that spread respiratory viral infections. Because these droplets are forcefully expelled, they are dispersed in the environment and can be exhaled by a susceptible host. While most respiratory droplets are filtered by the nose or deposit in the oropharynx, the smaller droplet nuclei become suspended in room air and individuals farther away from the patient may inhale them.

These finer particles are carried by the airstream into the lungs, where their site of deposition depends on their size and shape and is governed by various mechanisms. The respiratory transmission of the SARS-CoV-2 virus that causes COVID-19 is mainly by respiratory droplets. Appropriate protective measures are necessary to prevent virus transmission in various settings.”

###

About the American Journal of Respiratory and Critical Care Medicine

The AJRCCM is a peer-reviewed journal published by the American Thoracic Society. The Journal takes pride in publishing the most innovative science and the highest quality reviews, practice guidelines and statements in pulmonary, critical care and sleep medicine. With an impact factor of 16.494, it is one of the highest ranked journals in pulmonology. Editor: Jadwiga Wedzicha, MD, professor of respiratory medicine at the National Heart and Lung Institute (Royal Brompton Campus), Imperial College London, UK.

About the American Thoracic Society

Founded in 1905, the American Thoracic Society is the world’s leading medical association dedicated to advancing pulmonary, critical care and sleep medicine. The Society’s 15,000 members prevent and fight respiratory disease around the globe through research, education, patient care and advocacy. The ATS publishes four journals, the American Journal of Respiratory and Critical Care Medicine, the American Journal of Respiratory Cell and Molecular Biology, the Annals of the American Thoracic Society, and ATS Scholar

Media Contact
Dacia Morris
dmorris@thoracic.org

Read More

Continue Reading

International

What Follows US Hegemony

What Follows US Hegemony

Authored by Vijay Prashad via thetricontiental.org,

On 24 February 2023, the Chinese Foreign Ministry released a…

Published

on

What Follows US Hegemony

Authored by Vijay Prashad via thetricontiental.org,

On 24 February 2023, the Chinese Foreign Ministry released a twelve-point plan entitled ‘China’s Position on the Political Settlement of the Ukraine Crisis’.

This ‘peace plan’, as it has been called, is anchored in the concept of sovereignty, building upon the well-established principles of the United Nations Charter (1945) and the Ten Principles from the Bandung Conference of African and Asian states held in 1955. The plan was released two days after China’s senior diplomat Wang Yi visited Moscow, where he met with Russia’s President Vladimir Putin.

Russia’s interest in the plan was confirmed by Kremlin spokesperson Dmitry Peskov shortly after the visit: ‘Any attempt to produce a plan that would put the [Ukraine] conflict on a peace track deserves attention. We are considering the plan of our Chinese friends with great attention’.

Ukraine’s President Volodymyr Zelensky welcomed the plan hours after it was made public, saying that he would like to meet China’s President Xi Jinping as soon as possible to discuss a potential peace process. France’s President Emmanuel Macron echoed this sentiment, saying that he would visit Beijing in early April. There are many interesting aspects of this plan, notably a call to end all hostilities near nuclear power plants and a pledge by China to help fund the reconstruction of Ukraine. But perhaps the most interesting feature is that a peace plan did not come from any country in the West, but from Beijing.

When I read ‘China’s Position on the Political Settlement of the Ukraine Crisis’, I was reminded of ‘On the Pulse of Morning’, a poem published by Maya Angelou in 1993, the rubble of the Soviet Union before us, the terrible bombardment of Iraq by the United States still producing aftershocks, the tremors felt in Afghanistan and Bosnia. The title of this newsletter, ‘Birth Again the Dream of Global Peace and Mutual Respect’, sits at the heart of the poem. Angelou wrote alongside the rocks and the trees, those who outlive humans and watch us destroy the world. Two sections of the poem bear repeating:

Each of you, a bordered country,
Delicate and strangely made proud,
Yet thrusting perpetually under siege.
Your armed struggles for profit
Have left collars of waste upon
My shore, currents of debris upon my breast.
Yet today I call you to my riverside,
If you will study war no more. Come,
Clad in peace, and I will sing the songs
The Creator gave to me when I and the
Tree and the rock were one.
Before cynicism was a bloody sear across your
Brow and when you yet knew you still
Knew nothing.
The River sang and sings on.

History, despite its wrenching pain
Cannot be unlived, but if faced
With courage, need not be lived again.

History cannot be forgotten, but it need not be repeated. That is the message of Angelou’s poem and the message of the study we released last week, Eight Contradictions of the Imperialist ‘Rules-Based Order’.

In October 2022, Cuba’s Centre for International Policy Research (CIPI) held its 7th Conference on Strategic Studies, which studied the shifts taking place in international relations, with an emphasis on the declining power of the Western states and the emergence of a new confidence in the developing world. There is no doubt that the United States and its allies continue to exercise immense power over the world through military force and control over financial systems. But with the economic rise of several developing countries, with China at their head, a qualitative change can be felt on the world stage. An example of this trend is the ongoing dispute amongst the G20 countries, many of which have refused to line up against Moscow despite pressure by the United States and its European allies to firmly condemn Russia for the war in Ukraine. This change in the geopolitical atmosphere requires precise analysis based on the facts.

To that end, our latest dossier, Sovereignty, Dignity, and Regionalism in the New International Order (March 2023), produced in collaboration with CIPI, brings together some of the thinking about the emergence of a new global dispensation that will follow the period of US hegemony.

The text opens with a foreword by CIPI’s director, José R. Cabañas Rodríguez, who makes the point that the world is already at war, namely a war imposed on much of the world (including Cuba) by the United States and its allies through blockades and economic policies such as sanctions that strangle the possibilities for development. As Greece’s former Finance Minister Yanis Varoufakis said, coups these days ‘do not need tanks. They achieve the same result with banks’.

The US is attempting to maintain its position of ‘single master’ through an aggressive military and diplomatic push both in Ukraine and Taiwan, unconcerned about the great destabilisation this has inflicted upon the world. This approach was reflected in US Defence Secretary Lloyd Austin’s admission that ‘We want to see Russia weakened’ and in US House Foreign Affairs Committee Chairman Michael McCaul’s statement that ‘Ukraine today – it’s going to be Taiwan tomorrow’. It is a concern about this destabilisation and the declining fortunes of the West that has led most of the countries in the world to refuse to join efforts to isolate Russia.

As some of the larger developing countries, such as China, Brazil, India, Mexico, Indonesia, and South Africa, pivot away from reliance upon the United States and its Western allies, they have begun to discuss a new architecture for a new world order. What is quite clear is that most of these countries – despite great differences in the political traditions of their respective governments – now recognise that the United States ‘rules-based international order’ is no longer able to exercise the authority it once had. The actual movement of history shows that the world order is moving from one anchored by US hegemony to one that is far more regional in character. US policymakers, as part of their fearmongering, suggest that China wants to take over the world, along the grain of the ‘Thucydides Trap’ argument that when a new aspirant to hegemony appears on the scene, it tends to result in war between the emerging power and existing great power. However, this argument is not based on facts.

Rather than seek to generate additional poles of power – in the mould of the United States – and build a ‘multipolar’ world, developing countries are calling for a world order rooted in the UN Charter as well as strong regional trade and development systems. ‘This new internationalism can only be created – and a period of global Balkanisation avoided’, we write in our latest dossier, ‘by building upon a foundation of mutual respect and strength of regional trade systems, security organisations, and political formations’. Indicators of this new attitude are present in the discussions taking place in the Global South about the war in Ukraine and are reflected in the Chinese plan for peace.

Our dossier analyses at some length this moment of fragility for US power and its ‘rules-based international order’. We trace the revival of multilateralism and regionalism, which are key concepts of the emerging world order. The growth of regionalism is reflected in the creation of a host of vital regional bodies, from the Community of Latin American and Caribbean States (CELAC) to the Shanghai Cooperation Organisation (SCO), alongside increasing regional trade (with the BRICS bloc being a kind of ‘regionalism plus’ for our period). Meanwhile, the emphasis on returning to international institutions for global decision-making, as evidenced by the formation of the Group of Friends in Defence of the UN Charter, for example, illustrates the reinvigorated desire for multilateralism.

The United States remains a powerful country, but it has not come to terms with the immense changes taking place in the world order. It must temper its belief in its ‘manifest destiny’ and recognise that it is nothing more than another country amongst the 193 members states of the United Nations. The great powers – including the United States – will either find ways to accommodate and cooperate for the common good, or they will all collapse together.

At the start of the pandemic, the head of the World Health Organisation, Dr Tedros Adhanom Ghebreyesus, urged the countries of the world to be more collaborative and less confrontational, saying that ‘this is the time for solidarity, not stigma’ and repeating, in the years since, that nations must ‘work together across ideological divides to find common solutions to common problems’.

These wise words must be heeded.

Tyler Durden Sun, 03/19/2023 - 23:30

Read More

Continue Reading

Government

“True Stories… Could Fuel Hesitancy”: Stanford Project Worked To Censor Even True Stories On Social Media

"True Stories… Could Fuel Hesitancy": Stanford Project Worked To Censor Even True Stories On Social Media

Authored by Jonathan Turley,

While…

Published

on

"True Stories... Could Fuel Hesitancy": Stanford Project Worked To Censor Even True Stories On Social Media

Authored by Jonathan Turley,

While lost in the explosive news about Donald Trump’s expected arrest, journalist Matt Taibbi released new details on previously undisclosed censorship efforts on social media. The latest Twitter Files revealed a breathtaking effort from Stanford’s Virality Project to censor even true stories. After all, the project insisted “true stories … could fuel hesitancy” over taking the vaccine or other measures. The effort included suppressing stories that we now know are legitimate such as natural immunity defenses, the exaggerated value of masks, and questions over vaccine efficacy in preventing second illnesses. The work of the Virality Project to censor even true stories should result in the severance of any connection with Stanford University.

We have learned of an ever-expanding coalition of groups working with the government and social media to target and censor Americans, including government-funded organizations.

However, the new files are chilling in the details allegedly showing how the Virality Project labeled even true stories as “anti-vaccine” and, therefore, subject to censorship. These files would suggest that the Project eagerly worked to limit free speech and suppress alternative scientific viewpoints.

Taibbi describes the Virality Project as “a sweeping, cross-platform effort to monitor billions of social media posts by Stanford University, federal agencies, and a slew of (often state-funded) NGOs.”

He added: “We’ve since learned the Virality Project in 2021 worked with government to launch a pan-industry monitoring plan for Covid-related content. At least six major Internet platforms were ‘onboarded’ to the same JIRA ticketing system, daily sending millions of items for review.”

According to Taibbi, it targeted anyone who did not robotically fall in line with the CDC and media narratives, including targeting postings that shared “Reports of vaccinated individuals contracting Covid-19 anyway,” research on “natural immunity,” suggesting Covid-19 “leaked from a lab,” and even “worrisome jokes.”

That included evidence that it “knowingly targeted true material and legitimate political opinion, while often being factually wrong itself.”

The Virality Project warned Twitter that “true stories … could fuel hesitancy,” including stories on “celebrity deaths after vaccine” and the closure of a central New York school due to reports of post-vaccine illness.

The Project is part of the Cyber Policy Center at Stanford and bills itself as “a joint initiative of the Freeman Spogli Institute for International Studies and Stanford Law School, connects academia, the legal and tech industry and civil society with policymakers around the country to address the most pressing cyber policy concerns.”

The Center launched the Project as a “a global study aimed at understanding the disinformation dynamics specific to the COVID-19 crisis.”

As with many disinformation projects, it became a source of its own disinformation in the effort to suppress alternative views.

It is being funded by Craig Newmark Philanthropies and the Hewlett Foundation.

On its website, it proclaims: “At the Stanford Internet Observatory our mission is to study the misuse of the internet to cause harm, and to help create policy and technical mitigations to those harms.” It defines its mission to maintain the truth as it sees it:

“The global COVID-19 crisis has significantly shifted the landscape for mis- and disinformation as the pandemic has become the primary concern of almost every nation on the planet. This has perhaps never happened before; few topics have commanded and sustained attention at a global level simultaneously, or provided such a wealth of opportunities for governments, economically motivated actors, and domestic activists alike to spread malign narratives in service to their interests.”

What is even more disconcerting is that groups like the Virality Project worked against public health by suppressing such stories that are now considered legitimate from the efficacy of masks to the lab origin theory. It was declaring dissenting scientific views to be dangerous disinformation. Nothing could be more inimical to the academic mission. Yet, Stanford still heralds the work of the Project on its website.

There is nothing more inherently in conflict with academic values than censorship. Stanford’s association with this censorship effort is disgraceful and should be a matter for faculty action. This is a project that sought to censor true stories that undermined government or media narratives.

I am not hopeful that Stanford will sever its connection to the Project.  Censorship is now the rage on campuses and the Project is the perfect embodiment of this movement. Cloaking censorship efforts in self-righteous rhetoric, the Project sought to silence those who failed to adhere to a certain orthodoxy, including scientific and public health claims that were later found flawed or wrong. The Project itself is an example of what it called “media and social media capabilities – overt and covert – to spread particular narratives.”

Stanford should fulfill its pledge in creating the Virality Project in fighting disinformation by eliminating the Virality Project.

Tyler Durden Sun, 03/19/2023 - 17:55

Read More

Continue Reading

International

Royal Caribbean Officially Makes Controversial Change

The cruise line has made a controversial change that some passengers will love while others will be angry.

Published

on

The cruise line has made a controversial change that some passengers will love while others will be angry.

During the early days of the cruise industry's comeback from the covid pandemic, Royal Caribbean outlawed smoking in the casino. At the time, the Centers for Disease Control (CDC) required passengers to wear masks in public areas of the ship except when eating or drinking while stationary.

Smoking was, at first, a sort of loophole. People would smoke in the casino and remove their masks (or at least move them to the side) while playing slot machines. That basically meant that unlike drinking, where your mask could be moved and then replaced for a sip, smokers were essentially not wearing a mask.

DON'T MISS: Carnival Cruise Line Comments on a Possible (Very) Adult Change

Royal Caribbean (RCL) - Get Free Report closed that loop by fully outlawing smoking in its casinos while masks were still required. That was something that smokers weren't happy about, but probably understood given how large a role the CDC was playing in setting cruise ship rules.

Once the CDC stopped requiring masks (and regulating cruise ships at all), Royal Caribbean reverted to its pre-pandemic smoking policies. That meant that every casino on its ships had a smoking section. Technically, smoking is only allowed when actually playing a slot machine, but that's hard to enforce and the casinos quickly filled back up with smoke.

Now, the cruise line has officially made a long-rumored move that should make non-smokers really happy while angering a whole different group of the cruise line's passengers.

Image source: Matt Cardy/Getty Images

Oasis-Class Ships Getting Non-Smoking Area

Wonder of the Seas, the newest member of Royal Caribbean's Oasis class was originally built to sail out of China. It was moved to Florida due to the covid pandemic which created a sort of happy accident for non-smokers.

The ship was built with a secondary casino that was originally intended as a high rollers room. Once the ship was repurposed to sail from the United States, that smaller casino was shifted from an area designed to cater to big-money players into a non-smoking casino.

For months, it has been rumored that the cruise line would turn the "Jazz on 4" space -- the same location as the non-smoking "Golden Roon" on Wonder of the Seas -- into similar non-smoking casinos. Royal Caribbean never commented on those rumors, but it did warn passengers on some sailings that service in the Diamond Lounge, an area next to Jazz on 4 reserved for Diamond and higher members of the company's loyalty program, would be disrupted due to construction.

The results of that construction have been revealed on another Oasis-class ship, Harmony of the Seas. Johnny Travalor shared pictures of the new casino in a Facebook group for fans of Royal Caribbean's casinos.

"The brand new non-smoking casino on Harmony officially opened today and I have been here since the opening playing, donating!" he shared.

That's not official confirmation that all Oasis-class ships will have Jazz on 4 turned into a non-smoking casino, but all signs point in that direction.

Royal Caribbean Makes Some Passengers Mad

No change on a cruise ship will make all passengers happy. Some Royal Caribbean gamblers have suggested that the non-smoking area, which is much smaller than the original casino, should be the smoking area.

"Maybe once they see the non-smokers are bursting at the seam in that space and the smoking casino isn’t as crowded they will reverse it," Barb Boyer Green shared.

"That should be the smoking room...seems like the non-smokers are being put in a closet," Maureen Ethier added.

Not all passengers, however, are upset because of the size of the non-smoking area. Some are lamenting the loss of Jazz on 4, which hosted live jazz music.

"I think this is an overall loss, with now an entertainment area being taken over on this ship. I always enjoyed the jazz club and this will do nothing for the smell of the ship, net loss for all passengers" Justin Rogers wrote.

"It was our fav such a sad day. It was our escape, great talent, romantic, not another venue like it. Such a shame," added Julia Doumad.

Read More

Continue Reading

Trending