Mysterious blood clots are COVID-19's latest lethal surprise

News Network
April 28, 2020

Washington, Apr 28: After nearly three weeks in an intensive care unit in Los Angeles, doctors treating 41-year-old Broadway actor Nick Cordero for COVID-19 were forced to amputate his right leg.

The flow of blood had been impeded by a blood clot: yet another dangerous complication of the disease that has been bubbling up in frontline reports from China, Europe and the United States.

To be sure, so-called "thrombotic events" occur for a variety of reasons among intensive care patients, but the rates among COVID-19 patients are far higher than would be otherwise expected.

"I have had 40-year-olds in my ICU who have clots in their fingers that look like they'll lose the finger, but there's no other reason to lose the finger than the virus," Shari Brosnahan, a critical care doctor at NYU Langone said.

One of these patients is suffering from a lack of blood flow to both feet and both hands, and she predicts an amputation may be necessary, or the blood vessels may get so damaged that an extremity could drop off by itself.

Blood clots aren't just dangerous for our limbs, but can make their way to the lungs, heart or brain, where they may cause lethal pulmonary embolisms, heart attacks, and strokes.

A recent paper from the Netherlands in the journal Thrombosis Research found that 31 percent of 184 patients suffered thrombotic complications, a figure that the researchers called "remarkably high" -- even if extreme consequences like amputation are rare.

Behnood Bikdeli, a doctor at New York-Presbyterian Hospital, assembled an international consortium of experts to study the issue. Their findings were published in the Journal of The American College of Cardiology.

The experts found the risks were so great that COVID-19 patients "may need to receive blood thinners, preventively, prophylactically," even before imaging tests are ordered, said Bikdeli.

What exactly is causing it? The reasons aren't fully understood, but he offered several possible explanations.

People with severe forms of COVID-19 often have underlying medical conditions like heart or lung disease -- which are themselves linked to higher rates of clotting.

Next, being in intensive care makes a person likelier to develop a clot because they are staying still for so long. That's why for example people are encouraged to stretch and move around on long haul flights.

It's also now clear the COVID-19 illness is associated with an abnormal immune reaction called "cytokine storm" -- and some research has indicated this too is linked to higher rates of clotting.

There could also be something about the virus itself that is causing coagulation, which has some precedent in other viral illnesses.

A paper in the journal The Lancet last week showed that the virus can infect the inner cell layer of organs and of blood vessels, called the endothelium. This, in theory, could interfere with the clotting process.

According to Brosnahan, while thinners like Heparin are effective in some patients, they don't work for all patients because the clots are at times too small.

"There are too many microclots," she said. "We're not sure exactly where they are."

Autopsies have in fact shown some people's lungs filled with hundreds of microclots.

The arrival of a new mystery however helps solve a slightly older one.

Cecilia Mirant-Borde, an intensive care doctor at a military veterans hospital in Manhattan, told AFP that lungs filled with microclots helped explain why ventilators work poorly for patients with low blood oxygen.

Earlier in the pandemic doctors were treating these patients according to protocols developed for acute respiratory distress syndrome, sometimes known as "wet lung."

But in some cases, "it's not because the lungs are occupied with water" -- rather, it's that the microclotting is blocking circulation and blood is leaving the lungs with less oxygen than it should.

It has just been a little under five months since the virus emerged in Wuhan, China, and researchers are learning more about its impact every day.

"While we react surprised, we shouldn't be as surprised as we were. Viruses tend to do weird things," said Brosnahan.

While the dizzying array of complications may seem daunting, "it's possible there'll be one or a couple of unifying mechanisms that describe how this damage happens," she said.

"It's possible it's all the same thing, and that there'll be the same solution."

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News Network
June 9,2020

Washington, Jun 9: When epidemiologists talked about "flattening the curve," they probably didn't mean it this way: the US hit its peak coronavirus caseload in April, but since that time the graph has been on a seemingly unending plateau.

That's unlike several other hard-hit countries which have successfully pushed down their numbers of new cases, including Spain and Italy, which now have bell-shaped curves.

Experts say the prolonged nature of the US epidemic is the result of the cumulative impact of regional outbreaks, as the virus that started out primarily on the coasts and in major cities moves inward.

Layered on top of that are the effects of lifting lockdowns in parts of the country that are experiencing rising cases, as well as a lapse in compliance with social distancing guidelines because of economic hardship, and in some cases a belief that the threat is overstated.

"The US is a large country both in geography and population, and the virus is at very different stages in different parts of the country," Tom Frieden, a former director of the Centers for Disease Control and Prevention told AFP.

The US saw more than 35,000 new cases for several days in April. While that figure has declined, it has still been exceeding 20,000 regularly in recent days.

By contrast, Italy was regularly hitting more than 5,000 cases per day in March but is currently experiencing figures in the low hundreds.

"We did not act quickly and robustly enough to stop the virus spreading initially, and data indicate that it travelled from initial hotspots along major transport routes into other urban and rural areas," added Frieden, now CEO of the non-profit Resolve to Save Lives.

To wit: the East Coast states of New York, New Jersey and Massachusetts accounted for about 50 percent of all cases until about a month or so ago -- but now the geographic footprint of the US epidemic has shifted to the Midwest and southeast, including Florida.

Another key problem, said Jennifer Nuzzo, an epidemiologist at Johns Hopkins, is that the United States is still not doing enough testing, contact tracing and isolation.

After coming late to the testing party -- for reasons ranging from technical issues to regulatory hurdles -- the US has now conducted more COVID-19 tests than any other country.

It even has one of the highest per capita rates per country of 62 per 1,000 people, according to the website ourworldindata.org -- better than Germany (52 per 1,000) and South Korea (20 per 1,000).

But according to Nuzzo, these numbers are misleading, because "the amount of testing that a country should do should be scaled to the size of its epidemic.

"The United States has the largest epidemic in the world so obviously we need to do a lot more testing than any other country."

For Johns Hopkins, the more important metric is the positivity rate -- that is, out of all tests conducted, how many came back positive for COVID-19.

As of June 7, the United States had an average daily positivity rate of 14 percent, well above the World Health Organization guideline of 5 percent over two weeks before social distancing guidelines should be relaxed.

By contrast, Germany, which has tested far fewer people in relation to its population, has a positivity rate of 5 percent.

Even if testing were scaled up, carrying out tests in of itself does very little good without the next steps -- finding out who was exposed and then asking them to isolate.

Here also, too many US states are lagging woefully behind.

Texas, which is experiencing a surge in cases after relaxing its lockdown, is a case in point. The state targeted hiring a modest 4,000 tracers by June, but according to local reports is still more than a thousand shy of even that goal.

Opt-in app based efforts have also been slow to get off the ground.

Then there is the fact that some people are growing tired of lockdowns, while others don't have the economic luxury of being able to stay home for prolonged periods.

The government sent some 160 million Americans a single stimulus check of up to $1,200 back in April but it's not clear whether more will be forthcoming.

Still others, particularly in so-called red states under Republican leadership, have chafed under restrictions and mask-wearing guidelines that they see as an affront to their personal freedom.

"The US is kind of on the extreme of the individual liberty side," Sten Vermund, dean of the Yale School of Public Health, told AFP.

Part of this has to do with mixed messaging from Republican leaders, including President Donald Trump, said Nuzzo.

"We have had at the highest political level an assertion that this is a situation that's been overblown, and that maybe certain protective behaviors are not necessary," she said.

More recently, tens of thousands of people across the country have taken to the streets to protest the killing on an unarmed black man by police, risking coronavirus infection to demonstrate against the public health threat of racialized state violence.

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Agencies
March 26,2020

Washington, Mar 26: Indian-American hoteliers have come forward to rescue the stranded Indian students in the US following implementation of lockdown measures in the country in response to the rapidly-spreading coronavirus pandemic, offering them free accommodation and free meals.

With the students scrambling for a roof over their heads after being asked to vacate their hostels and India banning international flights for a week from March 22 due to the coronavirus pandemic, more than 6,000 rooms in nearly 700 hotels were offered to them by Wednesday following a call from the Indian Embassy.

The Indian Embassy have been running a round-the-clock helpline since last week for the students in the US, who number over 2,50,000.

Most of these hotels offered are in and around universities and colleges, but the hotel owners from across the country have come up in large numbers to the call given by community leaders, who have roped in Asian American Hotel Owners Association (AAHOA) for the purpose.

India's Ambassador to the US Taranjit Singh Sandhu said in a tweet, "It is heartening to see that Indian; Indian-American and other hotel owners are coming forward to help people with accommodation in these testing times. Together we can overcome the fight against COVID19!"

"The Indian community has come together to help the student and many hotel owners have offered their rooms free of cost to them. Many of them are also offering free meals to these students," Chicago-based community leader Nirav Patel told PTI.

Indian-American hotelier couple K K Mehta and Chandra Mehta have offered more than 100 rooms to Indian students at their two prime properties each near the Times Square and Barclays Center in New York City, said Jaipur Foot USA chairman Prem Bhandari on behalf of the hotels.

The Indian Consulate in New York had contacted them about this 10 days ago, he said.

"These students are the future of both India and the United States. All the top Indian-American CEOs, scientists and doctors came to this country as a student. It's our moral duty to help them with our resources," Bhandari said.

Regional director of AAHOA Upper Midwest Kalpesh Joshi said they had created a master list of the availability hotel rooms, which was being constantly updated.

Free accommodation would be allocated in coordination with the Indian Embassy and its consulates, he said.

"The Indian Embassy and its consulates are working tirelessly to get these students rooms," he added.

Joshi has also sent out a video message to his hotelier colleagues: "Because of the coronavirus outbreak, our Indian students in the US are out of shelter. Let's work together. As a hotelier, I would like to request all my hotelier friends to come forward... let's provide some rooms to the students."

Boston-based Computer Society of India (North America) has collaborated with AAHOA to help students and Indian IT professionals searching for emergency accommodation due to the COVID-19 lockdown.

Anyone who is having financial hardship will be given hotel accommodation either free of cost or the rates will not be more than USD 50, said the Computer Society of India (North America).

Minesh Patel, the chairman of Virginia Asian American Store Association, said between Richmond, Norfolk, and Virginia Beach, Indian-American hotel owners can help in arranging accommodation for over 500 Indian students.

Florida-based Vipul Patel, the national president of Asian American Store Owners Association, said support for the Indian students have been pouring in from the Indian-American hoteliers.

"I have not come across any hotel owner who said no to us," Patel said.

Rooms would be allocated to students on the recommendation of the Indian Embassy and its consulates in Houston, Chicago, Atlanta, San Francisco and New York.

The Indian Consulate in New York was the first to take a lead in this regard. It has worked with Hammock Worldwide Hotels and Resorts to provide temporary accommodation for the students at a flat rate of USD 50 per night.

Joshi said that initially there was a suggestion to charge a convenience fee of USD 20-25 per day from the students.

"But when a few of them offered free rooms and free meals, everyone agreed to it," he said.

According to Johns Hopkins University coronavirus tracker, the number of deaths caused by the novel coronavirus in the US rose to 1,031 with 68,572 confirmed cases. The US has the third highest number of confirmed cases behind China and Italy.

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Agencies
February 25,2020

Kuala Lumpur, Feb 25: The government party led by Interim Malaysian Prime Minister Mahathir Mohamad has rejected his resignation, urging him to continue leading it and the country, now shrouded in political uncertainty.

During an extraordinary meeting held on Monday night, the Malaysian United Indigenous Party (Bersatu) unanimously rejected the 94-year-old Prime Minister's decision, reports Efe news.

Mahathir, the world's oldest head of government, presented his resignation on Monday, later accepted by King Abdullah Pahang, on condition that he continue as Interim Prime Minister until a new government is formed.

That decision caused a domino effect that broke the Patakan Harapan (Alliance of Hope) alliance, formed in 2018 by four political parties that prevailed in that year's general elections.

Bersatu and 11 Popular Justice Party deputies announced their departure from the coalition, although they reaffirmed their confidence in Mahathir as Malaysia's political leader.

"We remain intact and prepared to build a party to face the difficulties," Marzuki Yahya, Bersatu Secretary-General, said after the meeting.

Confusion reigns in the country, with some local media claiming Bersatu and the 11 deputies Justice Party deputies intended to form a new government with opposition parties, including the historic Barisan Nasional coalition, under Mahathir's leadership.

Lim Guan Eng, Finance Minister and coalition member, said in a statement that the chief executive himself had informed him he had no intention of forming a coalition with Barisan, which suffered a historic defeat in the last elections.

A future government will need at least 112 of 222 parliament votes.

Mahathir returned to politics in 2018 heading the Patakan Harapan coalition to defeat his predecessor Najib Razak, marred by the corruption suspicions offenses.

To that end, Mahathir joined Anwar Ibrahim, a former political ally who fell out of favour in 1999 and was imprisoned five years on charges of corruption and sodomy, whom he promised to be his successor in power.

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