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A NYT video simulation that shows how early action is critical with decisive steps for quarantine and lockdown with enforcement, to control the spread of coronavirus. It shows the spread along a timeline of the coronavirus in the U.S.

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The CDC in the U.S. recommends use of face masks, cloth masks or scarfs, to prevent the spread of coronavirus.

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Addressing the UN General Assembly in a virtual setting Mr. Trump tells delegates that China should be held accountable for certain actions in letting the coronavirus pandemic spread. He included the denial by China of human to human transmission very early before Feb-March, and its allowing Chinese flights to go overseas when it had completely banned flights domestically. He said flights were allowed to leave China after the virus spread from Wuhan even after Mr. Trump banned flights from China to the U.S. This spread the virus from China to Europe and to America.  Mr. Trump says the WHO is controlled by China. And this happened after foundations such as the Bill and Melinda Gates foundation and other foundations partly replaced the strong role played by the U.S. government at the world health agency during the post war period maintaining strong U.S. and European oversight in the earlier period. The lack of cooperation by China to let American experts into Wuhan immediately in January played a role in delaying the U.S. getting a first hand look at the coronavirus at the epicentre. Instead a 2-3 week delay left the U.S. Europe and India unprepared for the speed and havoc caused.  The only way to tackle the coronavirus was with speed and that speedy response was doubly needed because Europe and the U.S. had no recent experience with epidemics. Even India and rest of Asia, Latin America, Africa have no experience with this type of transmission and spread making time absolutely critical.  This speed was affected because China and the WHO acted as stumbling blocks in this view of what happened. The result was that in past pandemics were fought together, this pandemic was fought on a country by country basis, a bad precedent. ...

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Take a a look at the moving BBC chart  "How the coronavirus spread" to see the dizzying speed at which the virus spread in America. In the beginning of March there are only about 200 confirmed infection cases in the U.S., by April 7 the number skyrocketed to 379,000. The public health experts were right including Dr. Fauci and Dr Birx. Even these experts may have been astounded at the speed with which it has spread, and going through a very difficult time convincing others including the skeptical public about the great danger to America. China's quarantine of the entire country of about 1 billion people, Italy's experience and data freely available from Italian doctors to American doctors, were warnings of what lay ahead for America. 

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The people in the U.S. are shifting to widespread use of masks. There was some cultural resistance in Europe and the U.S. to use of masks, compared to Japan, South Korea and China where the use of masks in epidemics was common in earlier health crises. Europe changed first and now the U.S. is adopting masks as a way to avoid th spread of coronavirus. Health authorites in the U.S. now recommend use of masks to prevent asymptomatic people with infection from spreading the infection. Health experts say the widespread use of masks in Asia is one reason in addition to quarantines, contact tracing and isolation of clusters, is how China, South Korea, Taiwan and Singapore have controlled coronavirus to the point where it is no longer a serious danger.

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US president Biden takes strong action to prevent the spread of coronavirus Delta variant by introducing a vaccine mandate for 100 million workers, about two thirds of all American workers. All employers with more than 100 employees will have to require their employees to get vaccinated. All federal government workers and contractors, and recipients of medicare or federal funds are required to get vaccination.

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Officials in the U.S. Rocky mountain states of Montana, Wyoming, Colorado, Utah, Idaho and New Mexico say the resistance to face masks and social distancing are reasons for rapid spread of coronavirus in these states in the second wave. People tired of the pandemic have failed to follow the basic rules. In parts of Idaho sports games had to be halted because of militant maskless fans.

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Data from India in a large study shown in Science magazine show useful findings. Only a small number of people cause the wide spread of the coronavirus. This study covers the two southern states of Tamilnadu and Andhra Pradesh with total population of 128 million. Contact tracers in the 2 states reached about 3 million contacts for the 435,000 coronavirus cases. Researchers analyzed data from 85000 of these cases where enough data was available with 600,000 contacts. Some interesting findings are- About 5300 children infected 2500 contacts among other school age children showing children in schools can spread the virus. About 5% of the people account for 80% of the infections detected by contact tracing. 71% of the people did not seem to have transferred the virus to someone else. Median hospital stay is only 5 days much less than in the U.S. The number of deaths in India is much smaller than the U.S. less than 100,000. 5.2 million people out of 6.2 million people have recovered.       ...

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U.S. president Trump says in this interview with Michael Bender of WSJ about the international spread of the coronavirus- "there is a chance it was intentional." He said he did not think China would do that "but you never know, but it has had an impact."

He also said that he would like to think there was not systematic racism, but unfortunately there is some. 

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US economic growth surged at a rate of 6.5% for the April to June period in 2021. This pushes the economy beyond its pre-pandemic size. Growth was lower than the 8.4% forecast of economists, yet strong enough to increase its size to exceed the pre pandemic level. It was powered by the business reopenings, vaccination drive, and the government infusion of pandemic aid to households and business. New restrictions after this summer for coronavirus following last year's pattern with extensive summer tourism and spread of coronavirus, could again slow the economy. Government infusions of aid aided consumer spending, and this could slow in the months ahead, and lockdown restrictions could limit growth.

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Worsenign outbreaks of coronavirus in the midwest U.S. comes with resumption of sports games on Oct. 23. Campuses at Michigan State, Minnesota and Nebraska see infection rates in the general population of over 5%. Rates are also high at the University of Michigan  in Ann Arbor. Community viral spread factor is missing in the effort to restart sports games, and has drawn criticism from local governments.

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India imposes a travel ban for 30 days for visitors and overseas citizens of India in an effort to control spread of the coronavirus. The rule goes into effect on March 13, Friday. Visitors to India will face a quarantine of 14 days. The ban was announced on the same day that the U.S. president Trump announced a travel ban for 26 European countries for 30 days.

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Germany has shown that low tech contact tracing efforts work- no apps needed, a phone, a desktop computer with a centralized database, and most important the human relations skills of the person doing the calls. The  sensitivity to the situation facing each person being called, being able to talk to the person in the language they speak in a multilingual environment such as California, is shown here. A 40 person team operates in San Francisco consisting of public health officials, clinicians, medical students and librarians. They call the contacts of people with coronavirus, arrange tests, and as needed send packages of food and medicines to hotel rooms or homes. Every call is expected to last 15 minutes but all sorts of questions are handled.  English and Spanish are used. Here one of the persons doing the contact tracing says she does not use apps, just an open source software used in the fight against Ebola. Definitely low tech, no waiting, get going is the message to every city in the world. She says apps software such as what Google and Apple are putting out can tell you whether the person went to some place, but cannot tell you more about that person, cannot tell you about problems the person is having being tested, and how they are having difficulty providing for families. One of the big lessons from Germany and efforts such as this one in San Francisco, and in other places such as Paris, Singapore, Taiwan, is that there is a complex nature to contact tracing that cannot be solved by tech. In fact the best thing to do is to get started immediately, with a phone and a database on a computer, as long as you have a person who has the motivation and skills, empathy with people, a lot can be done. Waiting for apps is a dangerous waste of time is shown by the low tech German experience, and the experience in other places. Most important is starting immediately. The example shown here of working with migrant workers in contact tracing shows in the most vulnerable places it is these human relations skills that count, that no tech app can do. It requires detective skills to find out and get people to share their history of movements and contacts for 14 days . In Singapore crowded dormitories house 300,000 of 1.4 million migrant workers. Singapore using an app also but its use is secondary. Apps don't work in many situations but fail in the most critical situations such as these dormitories and other eccentric or atypical situations such as faced by South Korea with religious groups and gay communities, elderly people in Europe, that generate the worst dangers of spread and need to be cluster isolated quickly. Human contact tracing has a history of being an effective method and was used in China and South Korea during the 2003 SARS epidemic. More countries need to adopt the method used in Asia and in Germany, particularly Britain, the U.S., France and India. It is OK that Britain's NHS and India's national government with Aarogya Setu app have put out their own apps which balance privacy concerns with the need to act immediately and cover the entire country, but the hard slog of human contact tracing teams in each district is indispensable. This is why the former Health minister in Britain calls it Britain's national mission to do this. Speed is key- putting together teams across the country in every district from skilled volunteers or government workers, and pulling together the phone and a centralized database on a computer as basic equipment. The fact that this is easily doable and people with human skills needed can always be recruited as they have been in Germany- from public officials in local government who are less busy in lockdowns, medical students, clinicians, volunteers, people from different professions- makes it inexcusable not to learn from others experience and get going. Just Do It. You want to reopen business, professions, offices and public services- Just Do It, it makes this possible. You want to prevent spread of the virus- Just Do It, it makes this possible. You want to limit damage to the economy and get the recovery going- Just Do It, it makes this possible. People of all shades of opinion can agree on this- its the only thing that works, even when there is a lack of enough proper accurate testing. ...

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 South Korea has run about 300,000 coronavirus tests, double that in Italy and ten times that in the U.S., says this report in the WSJ. This report shows how the South Korean testing works and the workday of Lee Hyuk-min, a clinical microbiologist at a testing lab of Yonsei University Health System Severance Hospital in Seoul, who is working from 4.45 am to 11 pm. South Korea's effectiveness in controlling the spread is based on a strategy of efficient testing that enables isolating quickly people and areas. South Korea's testing network is a legacy of the MERS coronavirus outbreak in 2015, and the government failure at that time to control it.  It brings together doctors, medical staff, labs, and political leaders in roles following the protocols established since then. Dr Lee and others are the final checkpoint in the system which coordinates a diagnostic operation that combines together 633 test sites and 100 labs. The protocol includes a uniform setup- same testing equipment, same training, same decision making process. At 8 am each day all labs upload results to a shared database, which allows public and private hospitals to monitor patient results and report them to Korea Centers for Disease Prevention and Control. Hospitals upload testing details to an online directory. This surveillance allows South Korea to predict where to concentrate its efforts for controlling spread, says Dr Lee who advises the South Korean government on lab testing issues. Action plan took 2 years for the new rules to be implemented following MERS in 2015. The plan included accelerated bio testing company approval for tests. The first company got approval on Feb 4, followed by 4 other firms. Dr Lee says testing is only part of the equation as labs are needed to process and confirm results. Another key is innovation. South Korea setup testing in drive thru locations, that limit contact and speed up testing, which the U.S. is adopting. Dr Lee says early identification is key, and identifying the first coronavirus patient which was done in South Korea on January 20. Other countries including the U.S. took too long to identify the first patient, says Dr. Lee. ...

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The asymptomatic coronavirus infected people are a large fraction of the people with coronavirus. This is a huge problem as these people unaware of the danger are unwittingly spreading the virus. This is one of the most unusual aspects of this virus compared to other virus epidemics, and why it has become so dangerous. It is also why social distancing alone is not enough. Strict enforcement of stay at home orders by public health authorites, state and federal governments is essential as the unwitting spread by asymptomatic people who are not following the required guidelines is a huge problem.  Even as the public now calls for stricter action the lax behaviours in March in U.S. Britain, France, Germany, and in Italy in February, have created a population of infected people that acts as a backlog for testing, creating a surge in April. One of the novel features of this public health crisis is that lax behaviours stemming from a lack of understanding of the severe contagiousness of the coronavirus is making it a larger crisis on a scale not encountered before.  The contamination potential of this virus is only now being tackled with experts in fluid dynamics at labs such as the MIT Lab in the U.S. looking into how it can contaminate environments, as shown on BBC News.  With pieces of the contamination puzzle only now being put together. Heeding public health expert warnings and guidelines is all the more essential for this reason. ...

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With about one fourth the population of California Michigan has done approximately 100,000 tests, compared to about 213,000 in California. This is about twice the rate of testing in Michigan- with the help of the U.S. government- compared to testing taking place so far in California. The lack of aggressive testing in California could also mean there is a lot that remains unknown about the extent of the spread of coronavirus in California. 

That Governor Newson ordered New York to shelter in place on March 19, 3 days after the stricter stay at home order in France on March 16 requiring a document to show police to go outside, shows California like the rest of the country was not that much different. Beaches were packed in California on the weekend of March 15. A lot remains unknown at this point about the spread of the virus. The urban sprawl areas in Michigan are as hard hit as Detroit.

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South Korea has tested about 300,000 people for coronavirus. About 20,000 can be tested daily for coronavirus through 40 drive thru locations. South Korea invented this method of testing. Another feature of the South Korean method is the tracking down of people who have come into contact with those testing positive for coronavirus. The South Korean government is able to do this because it can access the credit card and cell phone information of people in the country. This is possible through laws that were passed after the failures during a previous epidemic of MERs. The government then tracks down and isolates the people who came into contact with infected persons. This includes people who show no symptoms, an important aspect of the South Korean program which needs to be adopted in other countries once the production of test kits and testing is ramped up. The reason is that about 30% of people who tested positive in South Korea were not showing any symptoms but acted as silent carriers. This is similar to the figures for people in the Wuhan region of China. This testing capability is one of South Korea's key strengths, though Germany's Robert Koch Institute says it has a similar capability to test 160,000 people a week. The U.S. has tested about 30,000 people by comparison. The U.S. government is procuring 60,000 test kits under the Defense Production Act. South Korea also enforces social distancing though a $2500 fine and a 1 year prison sentence. Germany now has a 2500 euros fine in some states for curfew violations.  By comparison the fine in Britain is insignificant.  Another difference between China and South Korea with Germany and the rest of Europe, the U.S., is that in China and South Korea self-isolation is monitored, tightening the control over coronavirus spread at every turn.   ...

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President Trump's failure to followup on his decision to shut down all flights to China on January 29 with speedy action on preparing for the coronavirus as suggested by some of his advisors is the subject of this article in the NYT.  There were two distractions one was the trade deal with China that was being negotiated, and then the impeachment trial in the U.S. Congress that was set in motion by Democrats. Another problem was the lack of good information about the extent of the virus spread in China and infected case numbers. As it turns out no one really knows the real scale of infections in China. If is was known that there were as many cases in China as there are in the U.S. today this would have resulted in shaking up any complacency in the Trump administration and in the states. Considering the experience of Europe and the U.S. it could be that China had the same number of infected cases as the U.S. does today for a population three times the size. China had a strict quarantine but it also did not realize what it was up against in the first weeks of the crisis in January. It appears now that China, Europe and the U.S. all lost some time from 2-4 weeks before realizing the severe consequences facing each region. This report says one of the vital pieces of information that was learned about infected people in China, was learned as late as the end of February by leaders of a government team looking at the coronavirus threat. It was that seemingly normal healthy people without symptoms but infected by the virus could spread the virus. This meant that this was very, very contagious. The lack of good information played a significant part, adding to the level of complacency in states such as New York and in the Trump administration. Politics such as the impeachment trial and political infighting added an unnecessary distraction. ...

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Young people are the major source of transmission of coronavirus in the US with school sports as a major cause. Michigan, New York, Florida, New Jersey, Pennsylvania, makeup 42% of cases on April 11. Adults ages 20 to 39 are affected the most in Michigan. With cases for children under 19 quadrupling from a month ago. 301 reported school outbreaks in Michigan alone. A big problem is that the spread of the variant B.1.1.7  from the UK started in clusters earlier in February. It now has spread to the general population. India has seen a surge in the past 5 days and public health officials are learning from this experience in Europe and the US. The focus  should be on micro containment zones, prime minister Modi told state chief ministers in a virtual meeting on April 10, with screening, testing, tracking, and that health officials should not let higher numbers affect their persistent effort to screen, test and track as with the unceasing effort the results will come. ...

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The failure to set clear and consistent guidelines by the U.S. Centres for Disease Control that the public can easily grasp and follow without retractions or errors has affected how the public responded in the pandemic. Here the CDC is shown to have first put forward a draft version on the role of aerosol and respiratory droplets in the air for spreading coronavirus infections and then pulled it back followed by putting it back on last week.

Much of it is about being definitive and 100% certain instead of focussing on the steps that are clearly going to reduce the spread of the pandemic and appealing to the good common sense of the public about following reasonable precautions of social distancing, masks, ventilation, staying away from gatherings.

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European Union countries, Britain and the US face the risk of a resurgence of coronavirus through the Delta variant and other variants. The Delta variant detected in India is 40% to 80% more transmissible than the Alpha variant detected in the UK, with the Alpha variant 50% more transmissible than the original coronavirus that originated in Wuhan.    Virologists in Italy feel they are flying blind at this time because of the lack of genetic sequencing in Italy, Spain, France and across most European Union countries. The UK has done genetic sequencing on 27% of recent covid positive tests. The figure drops to 1% for Italy and is tiny for most of the EU countries including Spain and France. Without genetic sequencing it is hard to predict and take steps. Another problem in the EU is that the southern economies Spain, Portugal, Greece, Italy, Croatia are dependent on summer tourism for the economy. The UK economy can handle a delay to a full opening for 6 weeks without serious impact to the economy, says WSJ. Southern European economies can afford only short delays to full reopening. Croatia acted as a door to spread of coronavirus into central Europe when Germans and Austrians went to vacation spots in Croatia in summer 2020. This situation could be happening again in 2020 with British and other tourists visiting vacation areas in Portugal, and Germans visiting Greece and other summer tourism spots. Portugal's national health institute says the Delta variant represents 60% of new cases in the area around Lisbon based on early data. The government of Portugal is facing criticism for letting a Champions League soccer final to take place in Porto, Portugal between two English teams. Thousands of English fans watched the game at the stadium. Other problems are in relaxing of mask rules in France and Italy, last week in France and in the coming week in Italy. French nightclubs open July 9 without mask requirement. Germany is maintaining some social distancing measures and this includes mandating medical masks in closed public spaces and on public transport. Half of French, Italians, Germans are vaccinated and quarter fully vaccinated. Yet the gaps of unvaccinated people is large enough to cause serious concern of another wave. The relaxation of mask rules- the entire stadium in Budapest was packed for a recent game between Hungary and Italy for a soccer Euro 2021 game with no masks to be seen. Stadiums played a key role for the spread of the original coronavirus in Italy with a game in Bergamo, Italy, in the area near Milan. All this makes health officials concerned about the risks of still another wave of the coronavirus.   ...

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The knowledge that the virus  caused human to human transmission and that it spreads to wide parts of the population very quickly were critical pieces of information that remained with Chinese epidemiologists, doctors and medical researchers, and were suppressed by local authorites in Wuhan.  Yet China's version of the U.S. CDC, China's Centre of Disease Control and Prevention, modeled on the U.S. control efforts worked effectively to identify the problem. Virologist Gao Fu, heads China's CDC. This report in Germany's Der Spiegel says Mr. Fu made it a habit to scan China's internet before bedtime for any signs of possible disease outbreaks. On the night of December 30 he came across rumors of an internal memo from the Wuhan Health Commission of an outbreak of a vaguely worded lung disease. When he called the Wuhan health authority he found their answers to be evasive which alarmed him. The next morning December 31 Mr. Fu sent the first of three teams to Wuhan which is how China was able to identify the problem, in the sense that Chinese authorites in Beijing were to rely on Dr Gao Fu to overcome the problem of Wuhan provincial authorites. He informed the World Health Organization Beijing office on that day. The Der Spiegel report says "shortly afterward," the Seattle Times in its report says this was about New Years Day 2020- Mr Fu made a call to Dr. Redfield, head of the U.S. Centre for Disease Control, who was on vacation. Redfield is deeply disturbed on hearing this from Fu and they have conversations over the next few days to the point that Dr. Gao Fu is in tears about what has happened. On January 1 Taiwanese public health authorites shared the information with WHO that the cornonavirus was a human to human transmission, would the Taiwanese authorites not have shared it with the U.S. the same week during calls from the U.S. CDC or other public health authorites alarmed about the situation. (The WHO was proving useless by Jan 14 when it contradicted Taiwan's more reliable assessment  on Jan 14 going by the letter from president Trump to WHO). On January 6 a few days later Dr Redfield and Dr. Azar head of Health and Human Services ask China for permission to send a team of CDC U.S. experts to China. This is cited in the U.S. letter to the World Health organization- the lack of human to human transmission information being given to the U.S. officially early by China. A risk that could have been a topic of conversation between the U.S. and China heads of CDC. That letter from president Trump also points out that the team of experts the U.S. planned to send was not accepted by China till Feb 16, one and half months after that series of conversations between Dr. Gao Fu of China CDC and Dr. Redfield of U.S. CDC in an alert message.  In effect removing one of the key defences for the U.S. and Europe in making their own defensive actions and plans, laying the basis of the worldwide coronavirus pandemic affecting millions of people. Dr Redfield is a AIDS researcher at the University of Maryland who spent most of his life trying to control spread of HIV and was appointed by president Trump to head CDC agency in 2018. He set a goal of eliminating AIDS by 2030 and is more comfortable with aids patients and research than the bureaucratic nature of agencies- CDC has about 11,000 employees. Once it was clear that a team of U.S. experts was not given permission to make its own assessment in Wuhan in the few days after January 6 offer to sent the team to China by Redfield of U.S. CDC and Dr. Azar, would it have alerted the U.S. that something was seriously heading the wrong way for a epidemic risk. That letter of president Trump cites how the head of WHO during the first SARS crisis in 2003, Dr. Harlem Brundtland acted when she faced China's lack of cooperation during that crisis by saying openly that this was a danger to world public health and millions. Could CDC in the U.S. and the other connected health authorites have taken the responsibility and filled Dr Brundtland's role in this crisis, that the WHO failed to perform?    ...

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Metro Detroit has 90% of the 17,000 cases in Michigan as the pandemic reaches its peak there this week.  The large Detroit airport renovated and enlarged is seen as a source of the coronavirus as Detroit is where all 3 auto U.S. auto companies are located. GM, and Ford have large manufacturing operations in China, and  Chrysler has plants in northern Italy, the locations where coronavirus has hit hard, and in the case of China where it originated. Health experts say the busy Detroit international airport connecting the Detroit hub to other auto hubs in northern Italy and China- both virus hotspots- may have contributed to the virus hitting Detroit early. This country to country transmission along some route is how the virus has traveled to over 150 countries. For instance German reports show Bavaria as the source of the early cases in Italy's Lombardy region. It could be that German auto companies located in Bavaria with large operations in China resulted in inadvertent transmission of the virus from China through airport in Munich from flights between Germany and China. A Shenyang municipal bureau report provides information on German  investment in Shenyang, Liaoning province. Munich based BMW makes 1.3 million cars here. There is also the newly built Chinese German Tiexi industrial park in Shenyang with 50 German companies BASF, Siemens, located there.  Once the virus arrives in one location its spread depends on the environment with densely packed areas and the health conditions prevailing in a particular area playing their part. Both in New York and Detroit metro area this helped its faster spread in lower income densely packed areas.   ...

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The U.S. bans travel from most of  Europe and India imposes quarantine on visitors and overseas citizens entering the country for 14 days. Countries around the world reacted quickly to the situation in Italy, France and Germany. The strict measures taken by China are gradually being adopted by other countries. Quarantine done early has worked limiting the spread of the coronavirus. Countries with strong public health systems are better positioned to weather the health crisis. Where strong action is taken early and in anticipation, with a strong public health response, there is better control over the spread. This comes with some economic cost as it has hit the Chinese economy, yet the rebound is likely to be that much quicker and done with more confidence. For instance air travel in China declined by 85% in February from a year earlier to 8.3 million journeys according to Chinese aviation officials. Moves to keep social interactions to a minimum have yielded results. Only food stores and pharmacies remain open in China till March 25.  ...