Corona Virus Covid 19

adsatinder

Plz Help Himabuj (Amit Tyagi) in Corona Fighting
Top scientists shaken by revelations that Covid isn’t natural but a lab-made virus that ‘escaped’
519,070 views
•May 17, 2021


12K
774


ThePrint


1.49M subscribers

#CutTheClutter #Covid19 In episode 748 of #CutTheClutter,

Shekhar Gupta takes an in-depth look at the latest revelations on the theory that Covid-19 virus was 'engineered’ at the Wuhan Institute of Virology. Top scientists have sought a fresh probe.

---------------------------------------------------------------------------------------------
Additional research by Arhana Sethi and Saamiya Laroia
---------------------------------------------------------------------------------------------
 

adsatinder

Plz Help Himabuj (Amit Tyagi) in Corona Fighting
क्या Plasma therapy को ban करने में ICMR ने देर की? Covid 19 | Steroid | Remdesivir | Lallantop Show
37,363 views
•May 18, 2021


1.9K
85


The Lallantop


18.3M subscribers
 

adsatinder

Plz Help Himabuj (Amit Tyagi) in Corona Fighting
China की Wuhan Lab से Coronavirus निकलने की थिअरी में क्या नया पता चला? | Covid-19 | Duniyadari E309
261,341 views
•May 18, 2021


12K
428


The Lallantop


18.3M subscribers
 

adsatinder

Plz Help Himabuj (Amit Tyagi) in Corona Fighting
NDIA NEWS
Aerosols from Covid-19 infected person can travel in air upto 10 metres: Govt
The "easy to follow guidelines" highlight the role of masks, social distancing, sanitation and ventilation in the country's fight against Covid-19.

Written by Prashasti Singh, Hindustan Times, New Delhi

UPDATED ON MAY 20, 2021 02:05 PM IST

The government on Thursday issued a set of guidelines to stop the spread of the coronavirus disease (Covid-19) as the country reels under the second wave of the pandemic. The "easy to follow guidelines" highlight the role of masks, social distancing, sanitation and ventilation in the country's fight against Covid-19, according to a release issued by the office of the principal scientific adviser to the government.

Throwing light on how well-ventilated spaces can reduce the risk of transmission from one infected person to the other, the guidelines say, "Just as smells can be diluted from the air through opening windows and doors and using exhaust systems, ventilating spaces with improved directional air flow decreases the accumulated viral land in the air, reducing the risk of transmission."

It is important to remember that those with no symptoms could also spread the virus, the guidelines said. Saliva and nasal discharge in the form of droplets and aerosols are the primary mode of transmission of the virus from an infected person, it added. To prevent this from happening, everyone should continue to wear double masks as these droplets are transmitted while exhaling, talking, speaking, singing, laughing, coughing, sneezing etc.
"Droplets fall within 2 meters from an infected person and aerosols can be carried in the air up to 10 meters," the government said.
The virus infects human hosts, where it can multiply, and in the absence of the host, it cannot survive, the government said. "Stopping the transmission of the virus from a person to another person will decrease the infection rate of the disease to a level where it can eventually die. This can be achieved only with the support and cooperation of individuals, communities, local bodies and authorities. Use of masks, ventilation, distancing, and sanitation, the battle against the virus can be won," it added.



Aerosols from Covid-19 infected person can travel in air upto 10 metres: Govt
 

adsatinder

Plz Help Himabuj (Amit Tyagi) in Corona Fighting
Office of Principal Scientific Adviser to GoI issued a guideline to “Stop the Transmission, Crush the Pandemic - Masks, distance, sanitation and ventilation to prevent the spread of SARS-CoV-2 virus”
9:41 AM · May 20, 2021·Twitter Web App


ANI
@ANI

·
15h
Replying to
@ANI
The advisory highlights the important role well-ventilated spaces play in diluting the viral load of infected air in poorly ventilated houses, offices etc. Ventilation can decrease the risk of transmission from one infected person to the other.

1621540434817.png



 

adsatinder

Plz Help Himabuj (Amit Tyagi) in Corona Fighting

adsatinder

Plz Help Himabuj (Amit Tyagi) in Corona Fighting
INDIA
Updated on : Thursday, May 20, 2021, 11:58 PM IST
Aerosols carrying COVID-19 virus can travel in air up to 10 meters: Govt gives new pointers to preventing transmission

By Sanjay Jog

Aerosols carrying COVID-19 virus can travel in air up to 10 meters: Govt gives new pointers to preventing transmission

Aerosols carrying COVID-19 virus can travel in air up to 10 meters: Govt gives new pointers to preventing transmission


MUMBAI: Smaller aerosol particles can be carried in the air for 10 metres, the government warned on Thursday as it issued simple and easy to follow guidelines to prevent the spread of the Covid-19 virus, advising use of double masks and underscoring the need for well-ventilated spaces.

The advisory especially highlights the important role well-ventilated spaces play in diluting the viral load of infected air in poorly ventilated houses, offices etc. Ventilation can decrease the risk of transmission from one infected person to the other.

VENTILATION, USE OF TABLE FANS: Just as smells can be diluted by opening windows and doors and using exhaust systems, the dangerous concentration of the virus can be reduced by ensuring that outdoor air flows in, the advisory adds. So, strategic placement of table fans, open windows and doors, even slightly open windows, can introduce outdoor air and improve the air quality inside. Introduction of cross ventilation will be further beneficial.
AIR-CONDITIONERS: It also warns against running air conditioners while keeping windows and doors shut. "Running ACs trap infected air inside the room and increase risk of transmission from an infected carrier to others," the advisory says.

COMMUNITY DEFENCE: Ventilation is thus a community defense that protects all of us at home or at work. In buildings with central air-management systems improving central air filtration /increased filtration efficiency is especially helpful when enhanced outdoor air delivery options are limited. In offices, auditoriums and shopping malls use of roof ventilators are recommended. Frequent cleaning and replacement of filters is highly recommended.
DOUBLE MASK: Saliva and nasal discharged in the form of droplets and aerosols, by an infected person while exhaling, talking, speaking, singing, laughing, coughing or sneezing etc. is the primary mode of virus transmissions. Infected person who shows no symptoms also transmit the virus. People without symptoms can spread the virus. People should therefore continue wearing a mask, wear double masks or an N95 mask.
Those who do not have a surgical mask can wear two cotton masks together. "Ideally, surgical mask should be used only once, but when pairing, you can use it up to 5 times by leaving it in a dry place for 7 days after one use (ideally give it some sun exposure)," the advisory states.
SURFACE TRANSMISSION: Droplets emitted by an infected person land on various surfaces (where they can survive for a long time), the advisory said, calling for frequent cleaning of high contact points such as door handles, light switches, tables, chairs and the floor with disinfectants like bleach and phenyl.


Aerosols carrying COVID-19 virus can travel in air up to 10 meters: Govt gives new pointers to preventing transmission
 

adsatinder

Plz Help Himabuj (Amit Tyagi) in Corona Fighting
No, Science Clearly Shows That COVID-19 Wasn’t Leaked From A Wuhan Lab

Ethan Siegel
Senior Contributor
Starts With A Bang
Contributor Group
Science
The Universe is out there, waiting for you to discover it.


Senator Rand Paul shown side by side with a much better man than he'll ever be.


A new conspiracy theory, promoted by Sen. Rand Paul, vilifies Dr. Fauci and attempts to tie him to ... [+]
SUSAN WALSH-POOL/GETTY IMAGES


Starting in late 2019, a novel strain of coronavirus, SARS-CoV-2, began infecting human beings for the very first time. Discovered in samples of patients that were reporting pneumonia-like symptoms in late 2019 but without an identifiable origin, no human had ever reported knowledge of or contact with the novel coronavirus SARS-CoV-2: the virus behind COVID-19. Subsequently, outbreaks, epidemics, and eventually an entire global pandemic ensued; at present, over 165 million people have been infected worldwide, resulting in nearly 3.5 million confirmed deaths thus far.

For many years, virologists, disease ecologists, and many other medical and biological researchers had been predicting that it was only a matter of time before the next pandemic arrived, including details such as how it would arise and what the most effective strategies for combating it would be. Despite the enormous scientific knowledge humanity has gained, however, an unfounded conspiracy theory about the virus’s origin has gained a lot of traction: that it was genetically engineered with the purpose of infecting humans, that it was leaked from the Wuhan Institute of Virology, and that’s where it came from. Most recently, disgraced journalist Nicholas Wade has penned an error-filled, misleading piece promoting this nonsense, but the science tells a different story.


The Wuhan Institute of Virology, which studies human-to-human transmissible diseases.


The Wuhan Institute of Virology, shown as members of the World Health Organization (WHO) team ... [+]
AFP VIA GETTY IMAGES


The conspiracy, of course, is that China, and specifically the Wuhan Institute of Virology, genetically engineered this novel strain of coronavirus, SARS-CoV-2, to specifically wreak havoc on human populations. Depending on which particular incarnation of this conspiracy you listen to, it can involve:

  • Dr. Fauci was behind it all, using NIAID to fund EcoHealth Alliance, which then funded Wuhan, which then created SARS-CoV-2,
  • that secret documents from the Chinese government dating back to 2015 indicate a plan to engineer a virus that could launch a global pandemic,
  • that Dr. Zhengli Shi, the chief scientist for emerging disease at the Wuhan Institute of Virology, engineered this virus with a furin-like cleavage site, in order to be specifically infectious to human ACE2 receptors,
  • or that the specific mutations that encode arginine (instead of the more typical tyrosine in this instance) in coronaviruses are a "smoking gun" for the engineered hypothesis.

Those are the claims — some with a grain of truth behind them, others which are completely bogus — being made against the natural origins of SARS-CoV-2, the virus that causes COVID-19. Now that we know what’s being claimed, let’s take a look at the actual truth.


It doesn't take a lot of contact between households to spread a deadly disease widely.


It doesn't take a lot of contact between households, once an initial infection occurs, for a disease ... [+]

GOODREAU SM ET AL., ON BEHALF OF THE STATNET DEVELOPMENT TEAM (2020)



For more than a decade, virologists, immunologists, and infectious disease specialists have been writing — in field-standard textbooks on the subject — about how the next global pandemic will likely occur. As the human population continues to grow, humans will continue to encroach on territory previously inhabited solely by animals. Now operating within these shared spaces, animal-human contact is inevitable, and that leads to the potential of disease transmission between animals and humans.
Given that mutations occur, it's only a matter of time before a disease that's catastrophic for humanity leapt from animals to humans, and then it would be up to humanity to mitigate the spread and severity of the outbreaks, epidemics, and pandemics that would ensue. These events, known as zoonotic events, have happened countless times over human history. Contact between humans and chimpanzees is what led to HIV first appearing in humans. Animal farming with pigs and birds has led to the pandemics of swine and bird influenzas. The idea that SARS-CoV-2 originated in animals and then leapt to humans isn't an exotic explanation; it should be the default hypothesis.


Young woman holding chimpanzee.


When an animal has contact with a human, or when a human eats an animal (or an animal bites or ... [+]

UNIVERSAL IMAGES GROUP VIA GETTY IMAGES


The alternative consideration is that this virus was created. This has a germ of truth, in the sense that humans have been "creating" novel organisms through genetic engineering for many years. Typically, this involves inserting genetic sequences that encode some structure, function, or protein into an organism, or otherwise altering its genome to produce a desired result. There’s even the prominent ability to reverse-engineer a deadly disease from pandemics past, like the 1918 “Spanish flu,” which was the last pandemic to infect over 100 million people in such a short time period. (Despite the scientific benefits of learning how flu viruses adapt to humans and cause pandemics, as well as the potential of increasing vaccine stockpiles, this research has been highly controversial for fear of weaponization.)
The science of what can be done in virology, with modern techniques, is quite impressive. But what the conspiracy attests must have happened reaches far beyond the capabilities of even the most advanced research teams in the world.
The first red flag that should leap out at you, but perhaps only if you have some knowledge of virology to begin with, is the very idea that you could "know" what certain mutations would do — i.e., that you'd know what you'd create and what effect it would have on humans — without extensive testing in humans themselves.


The SARS virus (orange) has a crown-like structure, part of the coronavirus family.


The SARS virus (orange) has a crown-like structure, meaning that its part of the coronavirus family ... [+]
NIH

For COVID-19, for example, we know that:

  • among the infected, asymptomatic cases represent a significant percentage of total cases,
  • while severe cases are relatively rare: 14% of total cases,
  • and critical cases, where respiratory failure, shock, or multi-organ dysfunction occurs, represent just ~5% of total cases,
  • and that only 2.3% of total cases are fatal, with every single documented fatality occurring among the critical case population.

This means, right off the bat, that if SARS-CoV-2 were engineered for the purpose of infecting and severely harming humans, it would have had to have been tested in at least hundreds of human subjects in order for scientists to know how effective it was. While we do have the ability to manipulate the genomes of viruses, or any other organism, for that matter, what we don't have the ability to do is to know how that will translate into effects of the virus in human (or any living) subjects.


Nobel prize winner Dr. Paul Nurse poses with a DNA molecule and a genetic sequence.


Nobel prize winner Dr. Paul Nurse poses with a DNA molecule and a genetic sequence. The fact that we ... [+]
PA IMAGES VIA GETTY IMAGES


Imagine that you have the tools, technology, and capability to change which amino acids are encoded by a genetic sequence. The entire SARS-CoV-2 genome, for example, has about 30,000 base pairs in it, and it only takes 3 consecutive base pairs to encode a single amino acid. There are 20 amino acids used in life processes on Earth, and there are typically two-to-four combinations of possible base pairs that can encode one of these amino acids.
There’s no technological reason why a researcher couldn’t have switched the codons for one amino acid, like tyrosine, into the codons for another one, like alanine. But then what? You can't make a virus more deadly — or, at the very least, you have no way of knowing what that switch would do to the virus — by switching out one amino acid for another. No virologist living today has that knowledge; that's not how this scientific field works. Without intensive and extensive studies of the virus in human beings, which we know we need because of the inherent genetic variabilities in human populations, we cannot predict what the resultant effects in humans will be.


India's total number of COVID cases has now crested 25 million.


India's total number of COVID cases has now crested 25 million, with many cities such as Kolkata ... [+]
NURPHOTO VIA GETTY IMAGES


Genetically, there are many reasons to think that SARS-CoV-2 occurred naturally.

  • The Wuhan Institute for Virology was studying bat viruses: RaTG13, to be specific. This bat virus is not a direct ancestor of SARS-CoV-2.
  • The first cases of COVID-19 in humans occurred in two places: linked to a wet market near the Wuhan Institute, and in more distant, rural areas where contact between humans and wild animals are common.
  • None of the staff at the Wuhan Institute were infected with SARS-CoV-2; they were PCR/antibody negative, which should be disqualifying for the lab leak hypothesis.
  • And, perhaps most importantly, the idea that SARS-CoV-2 was "perfectly adapted to humans" on first emergence is untrue; this variant appears to be a "generalist" virus.

The thing is this: there are all sorts of reasons behind why mutations occur. There are very common ones, like point mutations, deletions, or insertion mutations. But there are other types of mutations that occur as well: duplications, inversions, deletion-insertion combinations, and repeat expansions, among others. Finding an uncommon type of mutation in SARS-CoV-2 is no more evidence that a human intervened than it is to claim divine intervention for a human born with six digits on their hands and/or feet.

A sequenced genetic analysis of the UK variant of the novel coronavirus.



A sequenced genetic analysis of the UK variant of the novel coronavirus. The location of the change ... [+]
DPA/PICTURE ALLIANCE VIA GETTY IMAGES


Many of the other “points” that lab-leak advocates bring up in a Gish Gallop of arguments are easily refuted by actual scientific studies.

What about the fact that they didn’t find the intermediary host that enabled the jump to humans? It’s true, they found the original intermediary for SARS after just 4 months, and the intermediary for MERS after 9 months. But finding intermediary hosts for most viruses, even most pandemic viruses, are often unsuccessful. SARS-CoV-2 is nothing special in this regard.

What about the fact that this virus, unique among viruses in this particular genus, possesses a furin-like cleavage site? Furin cleavage is critical to many viral diseases: HIV, Ebola, and Influenzas H5 and H7. These sites occur in many genera of coronavirus, and in betacoronavirus (which SARS-CoV-2 is) in general. A recent study shows that these sites occur naturally in coronaviruses.

What about China’s plan to “unleash the coronavirus” on the world? In 2015, a conspiracy theory was published, in Chinese, claiming that the United States genetically engineered the original SARS virus as a biological weapon against China. This conspiracy has morphed through a network of Rupert Murdoch-owned publications to reverse the perpetrator and the victim, but there’s no story there at all.


This figure shows the structure of the spike protein in SARS-CoV-2.



This figure shows the structure of the spike protein in SARS-CoV-2. Panel A shows the spike ... [+]
WALLS ET AL., CELL, 181 (2) (2020), PP. 281-292 E6


It might seem like there’s no harm to claim, as some scientists have done, that we ought to be more fully investigating SARS-CoV-2 to determine its origin, and that means not ruling out the possibility that it was created in a lab and leaked out. But the downside to performing that sort of investigation is twofold.
First, seriously considering this shocking, ill-founded accusation serves to further undermine the autonomy and academic freedom of researchers around the world who work in highly specialized fields. As Zhengli Shi, the chief scientist for emerging disease at the Wuhan Institute of Virology, wrote, "The hypothesis of a lab leaking is just based on the expertise of a lab which has long been working on bat coronaviruses which are phylogenetically related to SARS-CoV-2. This kind of claim will definitely damage the reputation and enthusiasm of scientists who are dedicated to work on the novel animal viruses which have potential spillover risk to human populations and eventually weaken the ability of humans to prevent the next pandemic."
But the second reason is truly chilling: the reason so many people have died is because of a global political failure to respond appropriately. Attempting to shift the blame onto the very scientists who have been instrumental in understanding and combating the virus is a tactic straight out of Operation Himmler, and must be opposed by the entire scientific community in full force.

CHINA-FRANCE-DIPLOMACY

Chinese virologist Shi Zhengli (L) is seen inside the P4 laboratory in Wuhan in this 2017 photo. The ... [+]
AFP VIA GETTY IMAGES


One of the most challenging obstacles that scientists face in trying to communicate what they do is people’s stubborn resistance to a basic truth about the natural world: no one is in charge. There is no one at the controls; no one responsible for what nature does; no one in charge of mutation or natural selection in this world. Nature simply does what it does according to the physical laws that govern it, and all we can do to help navigate the human enterprise through it is to understand it and act according to the best recommendations that human knowledge has to offer.
Conspiracy theories like the lab leak hypothesis might sound compelling and inviting to us. After all, how much more comforting would it be to know that just a handful of evil people — not the politicians who sacrificed their constituents, but rather some imaginary “mad scientists” laughing maniacally in their lair — were ultimately responsible for the tragedies of the past 18 months? Fortunately, as scientists, we are not guided by comfort, but rather by the pursuit of truth and accuracy, based on the best knowledge we can obtain. Despite what many prominent voices would have you believe, the virology is open-and-shut: there is no compelling reason to believe that SARS-CoV-2 originated in a lab.

Ethan Siegel


No, Science Clearly Shows That COVID-19 Wasn’t Leaked From A Wuhan Lab
 
Top