What will happen if the stock market is closed due to corona virus?

stock market is closed due to corona virus
The New York Stock Exchange is preparing to trade at a full dimension when it is closed.
 The New York Stock Exchange announced the closing of the trading floor on March 23.
 I tested an electronic plan of action.
 Its last closure in 2012 was due to Hurricane Sandy.
With the spread of the Corona virus, global economies rushed to take cover effectively, which led to the cancellation of travel, live events, public gatherings, etc., and questions raised the necessity of closing global exchanges until the New York Stock Exchange announced on March 18 that it closed the trading floor on March 23 due to the spread of the Corona virus .
Closing an actual stock exchange like the New York Stock Exchange is currently a less challenging challenge compared to the previous decade, given that most exchanges and their trading are now fully electronic to market makers or liquidity providers via computers and mobile devices.
The New York Stock Exchange has a plan to continue its operations in the event that it is forced to close the famous trading floor on Wall Street in downtown New York, and a spokesman said that the exchange carefully monitors the spread of the Corona virus and has a strong contingency plan that is regularly tested to continue the work of the exchange in the event of any emergency.
According to Reuters, which received an internal note from the New York Stock Exchange, the exchange has taken concrete measures to reduce the potential spread of the virus. These measures included imposing separate entrances and dining areas for its traders and employees, minimizing inactive visitors to the minimum, and thorough cleaning of the facility.
Another memo explains to traders the continuity plan if the stock market closes its doors. Here are some of the main contents of the memo:
Market makers are charged with implementing auctions electronically.
The stock exchange carries out auctions on their behalf in case they are unable to do so.
The stock market or direct listings are not released while the stock market is closed.
Electronic exchanges will operate normally, including the American Stock Exchange, the Chicago Stock Exchange and the National Stock Exchange if the facility is closed on Wall Street.
The New York Stock Exchange was forced to close last time in 2012 for two days in anticipation of the sandstorm Sandy that flooded the Manhattan region at that time, and the Stock Exchange recently tested the market makers’ supervision of stock auctions remotely by contacting stock exchange systems, which was never tried during normal market operations .
The New York Stock Exchange was closed several times over the years, as it closed in 1914 for four months after the outbreak of World War I, after the death of President John Kennedy in November 1963 and for four days after the September 11 attacks.
What will happen if the stock market is closed because of the Corona virus – cancellation of travel, live events, public gatherings and others – the effects of the virus on the global economy
The New York Stock Exchange sees human beings as the basis of its operations despite the lack of traders and market makers compared to the past decade or earlier, and it said on its website:
“Although all of our markets operate electronically using highly sophisticated technologies, there is nothing to compensate for the presence of humans. This human contact helps ensure our strength, create orderly opening and closing, reduce volatility, increase liquidity, and improve prices. We have maintained our steadfast commitment to stronger and more organized financial markets for more than two hundred years and we intend to maintain this tradition in the next two hundred years. ”
According to the New York Stock Exchange, humans perform the following functions:
1. Market makers
Market makers – formerly known as specialists – maintain fair and regulated markets for their assigned securities, and operate both manually and electronically to facilitate price discovery while markets open and close and during periods of major trade imbalance or instability.
2. Stockbrokers
Brokers, who are employees of member companies, carry out trading operations on the stock exchange on behalf of the company’s clients, act as agents, buy and sell shares to the public (institutions, financial reserve funds and traders). Brokers are in the trading floor and participate in the opening and closing auctions on the New York Stock Exchange as well as the length of the trading day.
The Chicago Mercantile Exchange announced the close of physical trading from the date of 19 March, with electronic trading continuing until further notice.

What If Scientists Could Discover Habitable Habitats Immediately after Studying the Stars?

What If Scientists Could Discover Habitable Habitats Immediately after Studying the Stars
The search for life in other worlds usually begins with the investigation of planets with the appropriate temperature to form a liquid, but scientists are seeking today to find new standards to track these worlds. One technology determines the positions of the desired planets based on the chemistry of the host star, allowing close examination, without the need for any direct prior knowledge of these planets, and it helps that the stellar and planetary structures are close, subject to the known and very accurate biochemistry.
Although scientists’ focus is on prominent chemical elements such as carbon and oxygen, there are other, less well-known, but extremely important elements, such as phosphorous, fluorine, and potassium.
Planet astrophysicist Natalie Henkel at the Southwest Institute said: “Although they are worthwhile elements, we haven’t gotten enough attention yet, because we haven’t realized how much they need them.”
Henkel and her team presented the preliminary results of their analyzes at the previous meeting of the American Astronomical Society, as they focused on phosphorus in particular, given its use in the process of converting sunlight into stored energy that benefits all living things, from algae to mammals, albeit in small quantities.
What if scientists could discover habitable habitats immediately after studying stars – planets with a temperature appropriate for fluid formation – stellar structures
Henkel said: «It is like preparing cakes, if the cake requires 4 eggs and you only have 3, you will not get your desired cake, this can be likened to phosphorous, with the difference that in practice it is not possible to obtain a sufficient amount of phosphorous».
Based on the foregoing, scientists discovered – while searching for Earth-like life – stars that contain ratios of phosphorous, and began studying the planets in those systems first, but they faced a problem that is difficult to measure phosphorous in stars, due to the low possibility of monitoring a wave of light containing A percentage of phosphorous, either from Earth or using existing space study equipment.
This prompted Henkel to compile the results of observing stellar chemistry in a database, out of more than 6000 stars, only 90 of them contained phosphorous ratios (for comparison, elements in 1,400 of these stars are noted).
It is worth noting that 12 of these stars are familiar to the host planets, which may help us understand the nuances of how phosphorus is related to both the star and the planet.
“We will face a similar problem with other elements, which are biologically important, even in small quantities,” Henkel said.
The limited information generated by Henkel and her team’s research indicates that this methodology is ineffective in selecting interesting planets outside the solar system, but they hope their research will be an invitation to scientists to work to solve the problem of collecting data on these rare elements.
The lack of phosphorous is not necessarily necessary to determine the viability of life outside the planet Earth, as external life – if any – may not require phosphorous at all.
Henkel said: “There may be certain forms of life that do not need the presence of phosphorous specifically, but we are used to life in its presence, so – given what we know now – it was very logical to search for it.”
Henkel discussed the possibility of more beneficial monitoring results than previously, and that this would require more effort in trying to monitor phosphorous ratios, and other biologically important and difficult elements for monitoring. She added: “Although it is difficult to know the exact ratios of these elements, this does not mean stopping tracking them. , We should always do more. ”
Scientists need every observational result they can get in order to track the potential life in other solar systems. It’s really difficult to discover the viability of life on other planets, it’s not simple, we can’t go by ourselves to explore potential planets with life on them, what we can currently do is modeling.

What Will Happen If You Do Not Go out and Expose Your Body to Sunlight?

What Will Happen If You Do Not Go out and Expose Your Body to Sunlight?

What would happen if we stayed indoors for a long time and were not exposed to daylight?

Even if it is not life threatening, getting out, breathing fresh air, and exposure to sunlight is important to your health, as getting out will give you a good dose of vitamin D.

There are many vitamins that we get from food, but vitamin D is absorbed by your skin by a mechanism known as photosynthesis reaction, which occurs when exposed to sunlight.

If you never go out, you will definitely suffer from a lack of this important nutrient, unless you add it as a supplement to your diet.

It is almost impossible to get the necessary amount of this vitamin through food only.

A few types of food contain vitamin D, and foods containing it contain a small amount of it.

Despite this, some people think that the vitamin D that we get from the nutritional supplements is not as good as the vitamin that is made with the presence of sunlight.

But why do we need vitamin D?
Vitamin D is essential for bone health, and it also protects against chronic diseases such as cardiovascular disease and diabetes.

Decreased vitamin D levels lead to poor bone health.

The presence of inappropriate amounts of this vitamin has also been linked to multiple sclerosis and prostate cancer.

In addition to getting nutrients, spending time in the sun is important to your overall health and improves your mood.

According to Life Noggin, sun exposure helps people with seasonal affective disorder.

And not only that, the sun adjusts nitric oxide in the blood and skin, which leads to lower blood pressure, which in turn helps reduce the risk of heart disease.

Although exposure to the sun has many benefits, exposure to it is highly harmful.

Aside from sun damage and the burns it causes, high exposure to natural light can harm the skin’s immune system.

Excessive sun exposure can also lead to injury to skin cell membranes, and increase the risk of skin cancer.

And according to (Life Noggin) magazine, UV rays can damage your skin in just 15 minutes, and here is the importance of wearing sunscreen, hats and sunglasses.

However, getting out is considered good for you as long as you don’t overdo it.


What Will Happen to Earth When Our Galaxy Collides With Andromeda?

We are awaiting an epic war between our galaxy and the Andromeda Galaxy, which is heading towards us at a speed of 250,000 mph.

Astronomers predict that Earth will be besieged during the largest galactic event in its history. The two giant galaxies will collide with each other, after 3.7 billion years.

Experts believe that the Earth will – fortunately – survive the collision, although it will be affected.

The collision will appear directly in front of us, changing the shape of the sky at night to be different from anything a person has seen before.

Join our future journey to see how it will be:

Away from the city lights and on a clear night, this is how the earth looks like.

You can see – during certain times of the year – the Andromeda Galaxy – surrounded by a yellow ring at the bottom – next to the bright range of our Milky Way.

Andromeda now separates us from 2.5 million light-years away, and when they collide with our galaxy in less than 4 billion years, a catastrophe that will last for billions of years will befall them, tearing them apart to form a new galaxy.

And the creatures that live on Earth just before the collision will have a very beautiful view.

On the left, you see Andromeda as you approach the Milky Way driven by the forces of mutual attraction.

The two galaxies will be affected by the collision quickly, after only 250 years after the collision, only the ruins of what was once galaxies will remain.

but that is not all.

The battle will last billions of years until the two black holes in their core approach close together.

One billion years after the cosmic massacre, the night sky will be blazing at the glow of the new elliptical center of the galaxy – if the Earth were present then the sun would swallow it up a billion years from now.
Because galaxy fusion takes billions of years, astronomers comb the sky in search of different phases of epic battles.

Below is a photo was taken by the Hubble Telescope of two spiral galaxies in an early merger phase.

This is a different set of galaxies, one of which has been stretched and distorted by the attractiveness of the other galaxies.


What If All the Antibiotics Stop Working?

Until the 1940s, one in every twenty children died before completing their first year of life. There was no effective treatment for tuberculosis and pneumonia, and a slight wound might lead to a gangrenous injury, and subsequently amputation. Antibiotics prevent the bacteria from dividing, slowing or eliminating them, which helps our immune cells get rid of the infection.
They eliminate deadly diseases, allow us to open the body during surgeries, and prevent cancer patients from infection. They enable us to raise animals and fish on an industrial scale, and their presence in cleaning products stops the spread of disease. But bacteria are fighting back. In 2016, 700,000 people died as a result of antibiotic-resistant infection, and by 2050, ten million people a year could be at risk. Like us, each individual bacterium differs slightly from others, so when a colony of bacteria encounters antibiotics, it complies with Darwin’s “survival of the fittest” saying. Some members of the colony do better than others, so they live longer and pass on their genes. This makes the next generation a little better in terms of resisting the effects of drugs.
The next generation also accumulates random mutations, which makes each one slightly different. Some of them become better in antibiotic resistance and the cycle recurs. These small improvements begin to accumulate, and we end up with bacteria that we cannot kill. We are in an arms race with those microorganisms whose molecules develop and disrupt antibiotics, disrupt them, or even flush them out of their cells. Moreover, thanks to diffraction in bacterial biology, when one species develops a method for drug resistance, it can donate its genetic code to another species and then transmit resistance. If our medications stop working, the treatable infection may become fatal again, the risk of infection may increase after surgery, and industrial implants may become impossible. We are in a race against time to find new ways to overcome it, a race that we cannot afford to lose.


What If We Were Able to Block All UV Rays?

UV rays
Scientists divide ultraviolet radiation into three wavelengths based on its behavior. At the most active end, 100 to 290 nanometers, UVC rays have the shortest and most harmful wavelengths. Fortunately, it completely blocks the atmosphere before it reaches Earth. Between 290 and 320 nanometers are UVB rays, which cause skin tan, burn skin and cause cancer. The atmosphere gets rid of about 95% of it, and it cannot run out to our bodies, but the little amount that reaches us is enough to harm our bodies. Finally, between 320 to 400 nanometers are UVA rays, which pass through the atmosphere and penetrate the skin, damaging the structures supporting our cells. This leads to premature aging, cataracts, and sunburn. Blocking these rays can avoid the need for sunscreen, but this will not be positive.
UV rays

What If We Were Able to Block All UV Rays?

Our bodies use UVA rays to make vitamin D, and many animals also rely on UV rays to survive. Butterflies use UV rays in their wings’ patterns to attract the worm, flowers use their petals to attract bees, and red salmon uses them to find food. In the Arctic, UV rays allow reindeer animals to discover wolves whose skin and urine appear black in snow. This is just the tip of the iceberg; research has shown that dozens of other species can see across the UV spectrum. If we get rid of UV rays, they will all be left in the dark.


When Does the Coronavirus Vaccine Become Available?

When does the Coronavirus vaccine become available
When Does the Coronavirus Vaccine Become Available

Work has begun in multiple organizations, including the National Institute of Health, to develop a vaccine for the new strain of the Coronavirus, known to scientists as the 2019-nCoV.

Scientists started their work soon, but their vaccine development strategy will benefit from previous work on similar viruses such as SARS (acute respiratory distress syndrome), and MERS (respiratory Middle East syndrome), as well as advances in vaccine technology, such as acid vaccines Nucleic acid vaccines, are the DNA and RNA that make up the vaccine antigens in our bodies.

Has work started on finding a vaccine specifically for the new strain?

Not yet, but work is underway on viruses that have a strong association with this strain, viruses that have previously caused severe human disease: SARS and MERS.

Scientists did not pay attention to this particular strain previously, as no one knew of its existence and its ability to cause diseases in humans until this outbreak began.

How do scientists know the right time to work on a vaccine for coronavirus?

Historically, work to build vaccines for corona viruses begins when the virus begins infecting humans. Bearing in mind that this is the third major outbreak of new coronavirus in the past two decades, with the severity of the disease caused by these viruses. The investment must be made in developing a vaccine that greatly protects against these viruses.

What does the work include? And when are we supposed to have the vaccine?

The work includes producing the right target antigens, which are the viral proteins that the immune system targets, followed by testing the vaccine on experimental animals to test their effectiveness and safety of use.

Once the vaccine is proven safe and effective, clinical trials can be performed in humans. If the vaccine produces the expected immune and preventive reaction and is found safe, then it can be widely produced to vaccinate as many people as possible.

We do not yet have isolated viruses (or virus samples) to test the effectiveness of the vaccine against. We also lack antibodies that will confirm the vaccine is ready for use. We need the virus to verify that the immune response to the vaccine is working as it should, and we also need to determine which animals we will test the vaccine for, which may include mice and primates.

Can people secure these outbreaks in the future?

It is expected that such outbreaks will occur shortly intermittently.

To try to prevent the spread of outbreaks and large epidemics, we need to improve the health oversight of people and animals around the world, as well as invest in risk assessment mechanisms that allow scientists to assess potential human health threats from recognized viruses.

When does the Coronavirus vaccine become available?

A global movement is necessary to invest in new vaccine manufacturing methods, methods that can be quickly activated when a new virus appears, such as the current Coronavirus, and other viruses such as Zika, Ebola, and influenza.

Our current response to outbreaks is purely a reaction, that is, it begins after the outbreak has occurred, so we need a more effective method supported by ongoing funding.


According to Science, This Is What Will Happen 10,000 Years From Now

What Will Happen 10,000 Years From Now
Imagining the future of humankind, our planet, and everything dear to us in our corner of this dark and cold universe is usually the field of science fiction, and we usually worry about a few hundred years at best, but what about thousands and thousands of years? What will happen then? Thanks to the various scientific tools, it has become clear that some things in the distant future can be predicted with surprising accuracy.

What Will Happen 10,000 Years From Now:

Based on what we know about life, the universe, and everything, some scientific forecasts in areas such as astrophysics and evolution can reach hundreds of thousands of years in the future, and several timelines can be found fixed on Wikipedia, among which one is based a lot on science fiction and popular imagination, but let’s see What the science says will happen in the nearest distant future, about 10,000 years from now.

To begin with, it will then be that the eastern Antarctic, the largest continuous ice sheet, has completely disappeared, and models predict that if the Wilkes sub-basin collapses, then this huge ice mass will take 5,000 to 10,000 years to dissipate in The sea, raising its water level from three meters to four, and it is likely that there will be no human presence at all during this period to deal with the rise of sea water, according to an estimate made by the Australian theoretical physicist (Brandon Carter), which he called (Burhan Judgment Day) There is a 95% chance that the human race has died Me completely during 10,000 years, and this topic has received a lot of controversies, so we are not sure whether humans will survive for that time or not, but if they can survive there will be no regional genetic differences between them, and this does not mean that all people will be the same, but none The genetic differences between them (such as blue eyes versus brown ones) will spread evenly around the planet.

It is also expected that during the next 10,000 years the giant red star (Antares) will explode, transforming into a supernova super bright that will be visible during the day (in fact, the star Antares is expected to explode at any moment, so we hope that this will happen). Soon so we can see it in our sky instead of imagining it will happen at a time when our offspring are extinct.)

If we extend that time window to 13,000 years, the tilt of the Earth’s axis would be reversed, separating the seasons between the two hemispheres, which would be confusing to us if we lived.

But regardless of whether humans will survive until that time, Pioneer 10, 11, Voyager 1, and 2, and New Horizons space probes will continue to sail across the stars, not for thousands, but millions of years.

If we looked farther into the future, 296,000 years from now the Voyager 2 would surpass the brightest star in our sky (Sirius).

All of these expectations deal with the closest possible point of what we know in the distant future, yet we are already feeling dizzy.


What is Coronavirus?

What is Coronavirus

What is Coronavirus?

Coronavirus is one of the most common viruses that cause nasal infections, sinuses, and sore throats. In most cases, it is not a serious infection except for the two types are known as the Middle East respiratory syndrome (MERS) and atypical pneumonia, or what is known as Severe acute respiratory syndrome. Of the 475 people killed due to respiratory syndrome in the Middle East, which first appeared in 2012 in Saudi Arabia and then in other countries in the Middle East, Africa, Asia and Europe. However, since 2015, there have been no further reports of severe acute respiratory syndrome cases.

The origin of Coronavirus

Coronavirus, the cause of respiratory syndrome in the Middle East, is a zoonotic virus. This means that it is a virus that is transmitted between animals and people. Some studies have shown that infection with the virus started through direct or indirect contact with infected camels, and some believe that the virus initially originated in bats, and later moved to camels, then from camels to humans.

Coronavirus infection symptoms 

Coronavirus causes symptoms similar to the common cold. Symptoms are usually mild to moderate in intensity. Often, they are symptoms of the upper respiratory tract such as the runny nose, headache, cough, sore throat, and fever. These symptoms often last for a while Short of time, and this does not prevent the possibility of coronavirus sometimes causing lower respiratory diseases, such as pneumonia or bronchitis, and these infections are more common in people who suffer from cardiovascular disease. Class, people with a weak immune system, infants, and the elderly.

Coronavirus diseases

Respiratory syndrome in the Middle East. 
People with the respiratory syndrome in the Middle East suffer from symptoms of a common cold in general, like most cases of coronavirus infection, in addition to the possibility of some suffering from diarrhea, nausea, and vomiting. Kidney Failure), with 3 to 4 deaths among 10 people, and it is worth noting that patients with diabetes, cancer, chronic lung inflammation, heart disease, kidney disease and those with weakened immune systems are more likely to suffer from Fat syndrome, and more susceptible to the same syndrome. The incubation period of the SKV virus that causes respiratory syndrome in the Middle East is 5 or 6 days, but it can range from 2 to 14 days. Individuals infected with the respiratory syndrome that causes the Middle East respiratory syndrome often receive medical care to help relieve symptoms. In severe cases, treatment includes support for the functions of vital body systems.

Atypical pneumonia

Atypical pneumonia, or SARS, is a contagious, sometimes fatal, respiratory disease. SARS first appeared in China in 2002, and within a few months, SARS was spread throughout most of the world by travelers, and symptoms of chills include muscle pain, and diarrhea, and cold symptoms such as dry cough and shortness of breath may appear about a week after infection, and the condition can develop and cause complications such as pneumonia, respiratory failure, and heart and liver failure. The elderly, especially those who suffer from chronic diseases such as diabetes or hepatitis, are more likely to have serious complications.

Coronavirus spread methods

Coronavirus can be transmitted from the infected person to others through the following:
Air by coughing and sneezing. Personal contact like touching or shaking hands. Touching contaminated surfaces and then touching the mouth, nose, or eyes before washing hands. Fecal contamination, which is rare.

Corona infection prevention

There are currently no vaccines to protect against infection with the Coronavirus, but the risk of infection can be reduced by doing the following:
  • Wash your hands often with soap and water.
  • Avoid touching the eyes, nose, or mouth if the hands are washed.
  • Avoid close contact with people who are sick.
  • The affected person stays at home so that he does not spread the infection to others.
  • Cover your mouth and nose with a tissue when you cough or sneeze, then throw it in the trash and wash your hands.
  • Surface cleaning and disinfection. Follow hygiene measures, including washing hands regularly before and after touching animals, and avoid contact with sick animals.
  • Avoid consuming raw or uncooked animal products, including milk and meat, because consuming them increases the chance of infection, and for camel milk and meat it can be eaten but after pasteurization, cooking, or other thermal treatments.

Corona Virus Treatment

There are no specific treatments for diseases caused by the Coronavirus, and most people who suffer from a Coronavirus infection automatically recover. The following treatments may help relieve symptoms:
Use a room humidifier or hot shower to help relieve sore throats and coughs. Take pain and fever medication. Drink plenty of fluids. Stay home and rest.


What If the Coronavirus Continues to Spread

What If the Coronavirus Continues to Spread
Chinese officials said that the new Coronavirus, which infected nearly two thousand people, is transmitted from person to person during its incubation period, that is, before symptoms of the disease appear to those who carry the virus, making it more difficult to contain it.

What If the Coronavirus Continues to Spread

Fifty-six people have died so far from the virus, which is becoming increasingly capable of spreading, according to the Chinese Minister of Health Ma Xiaoyu.

Several Chinese cities imposed strict travel restrictions, and Wuhan was completely closed – it is the main focus of the virus.

Officials vowed to intensify their efforts to contain the virus and announced that it would ban the sale of all wild animals in China from Sunday.

Initially, it was believed that the virus was born among animals, but it has spread rapidly since it was transmitted to humans.

Officials believe that the incubation period, during which a person carries the virus but without showing symptoms, is between one and 14 days.

A person may not know that he has the infection because symptoms do not appear, but he is still able to spread the disease.

A few infections have been reported in other countries: Japan, Taiwan, Nepal, Thailand, Vietnam, Singapore, Australia, the United States, and France.

This is an important development in our understanding of the virus and the awareness of the time that China needs to stop its spread. Those infected with the deadly SARS virus that struck China, or the Ebola virus transmit the disease after its symptoms appear, so it is easy to reduce those epidemics by identifying and isolating the infected and monitoring all those who have contacted them.

As for flu, it is the most famous example of a virus spreading before a person knows he is sick with it.

However, we have not yet reached the stage where people say there is a global epidemic as was the case when the swine flu spread.

But stopping “disease spreaders with no symptoms” would be the most difficult task for the Chinese authorities.

There are still fundamental questions that need answers such as how able to spread the infection during the incubation period, and whether any patient outside China spread the disease to other countries before being diagnosed with the disease, and why did the Chinese National Health Committee say that the ability of this virus to transmit is getting stronger?

Scientists have warned that it may be impossible to contain the spread of the Coronavirus within China’s borders.

The London-based MRC Center for Infectious Diseases said that the transmission of the disease from human to human is the only reasonable explanation for the level of infection, estimating that each infected person can transmit the infection to at least two other people.

Scientists have praised China for its efforts to contain the virus but said there was a need to reduce its transmission rate by sixty percent in order to control it.

This came after Chinese President Xi Jinping warned of the “accelerating” spread of the virus and the country was facing a “dangerous situation” during a special government meeting coinciding with the Chinese New Year celebrations.
Health officials are struggling to contain the spread of the virus, while millions of Chinese travel to celebrate the Chinese New Year.

The authorities have taken preventive measures to prevent the spread of the disease and imposed travel restrictions on many cities affected by the virus.

The authorities decided to ban private cars from entering Wuhan, in the central region of China.

The government  reported that a second emergency hospital would be built within weeks to treat 1,300 new patients, and it would be completed within two weeks.

This is the second hospital to be built to treat virus victims after work has already started on another 1,000-bed hospital.

The authorities also hired the army to deal with the situation, and specialized military medical teams moved to Hubei Province, where Wuhan is located.

These measures reflect a state of concern both inside and outside China about the spread of the virus, which first appeared in December.

The lunar New Year celebrations of the Mouse Year, which started on Saturday in many Chinese cities, were canceled.

Travelers across China were checking temperatures for signs of a fever, and train stations in many cities were closed.

The authorities in Hong Kong declared a state of extreme emergency and extended school holidays.