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This analysis from The Times of London provides critical information on the strategy for successfully tackling the coronavirus following the example of South Korea and progress in Britain.

The random community testing is key to getting an idea of the scale of infections in the community at large. The critical ratio called reproduction ratio tell one if the virus is under control and how lockdowns can be lifted. For Britain this 0.7 estimated by Imperial College. It has a 2 week lag. 1.0 or close to 1.0 is not good. Germany after being at about 0.7 has moved up to 1.0 with 2 week lag in information says the Robert Koch Institute. This means a lot of work ahead, it won't be easy.

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The Paris lockdown is unique and effective because people are required to carry a signed document showing where they are going and show it to police when going outside the home. About 100,000 police and gendarmes are enforcing the lockdown in France. The lockdowns in the U.S and some other countries lack this kind of enforcement. France implemented the lockdown March 16, after Italy acted late on March 10 with the virus already spreading there. Once this was done the lockdown was done with tight restrictions and enforcement by police unlike other places. In Asia India has imposed a strict lockdown.

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The threat of a new UK variant of the virus that is more contagious than the earlier one makes it more likely that a strong lockdown will be in place in the UK.

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As other countries imposed lockdowns including the U.S. and most of Europe, most of Asia, two countries Sweden and Japan continued to stall in restricting public gatherings and imposing lockdowns. Sweden's government is now looking at a U turn and imposing a lockdown. The government needs emergency powers to do this and it lack a consensus with the opposition parties to take this action quickly, says this report in DW.com. Japan is also looking at a lockdown to restrict the spread of the pandemic as cases mount.

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The critical variable in knowing whether lockdowns of cities and countries are working is called the coronavirus RO, or reproduction ratio. This ratio measures the average number of people infected by a carrier A. It could be that he infects 1 person at work and transport call it B people , or in large gatherings call it C people he infects 2 persons, or in other surroundings such as restaurants he infects 1 person call it D people. The people A has infected B+C+D are the ones now not infected by A with the lockdowns such as in New York, Italy, Germany, UK and France. It is determined by global health experts that the number of B+C+D is about an average of 4 persons infected by 1 person A with coronavirus, though it may be much higher in practice in some areas. The natural rate of RO or reproduction ratio is considered by the European Centre for Disease Prevention and Control to be 3.86 or about 4, if no lockdown or social distancing or other prevention is practiced. This in a situation where people behaved as before unaware that the virus was around them. Governments such as New York and France, UK, Germany are including this key variable in their determination of how long a lockdown lasts, and for determining if the reopening is not going the right way or failing. In such situations the lockdown would be reinstated, or if it is a phased reopening such as in the U.S. and other countries go back to the previous phase. In Italy and Germany the RO reproduction ratio for coronavirus is estimated by official experts at 0.8. Germany's RO estimated by the Robert Koch Institute and Italy's by Franco Locatelli, scientific advisor to the government. In New York the margin is thin- with RO of 0.9, estimate from the state's governor. In France which has one of the tightest lockdowns of all with a document required to go outside it is at 0.6, the figure coming from the prime minister Mr. Philippe. In the UK it is below 1.0 but no accurate figure is reported. As Dr. Birx- leading the coordinated response in the U.S. - emphasizes over and over again this is a very contagious virus, about which not much is known. Social distancing, wearing masks, basic prevention measures such as frequent handwashing, and not gathering in large numbers of people, is essential for defeating this virus. This has to be followed up with extensive testing and contact tracing to win this fight.   ...

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Vaccine passports requirements for restaurants, music venues, and football stadiums will be kept as Plan B and introduced with just 1 weeks notice to deal with a surge in coronavirus. Opposition from Tory MP's who say this will create a two tier society and infringe on civil liberties, is the reason Boris Johnson is not following France, other countries in Europe, and the US, in introducing a vaccine mandate. 

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Mike Bird in the WSJ points out that there is very little foundation for the idea that there is a tradeoff between the economy returning to normal and lockdown measures. Singapore and Japan without strict lockdown measures have also shown very sharp economic decline. The U.S. Federal Reserve and MIT economists published a paper at the end of March that shows during the 1918 flu epidemic cities with stricter lockdowns actually had better economic outcomes. In the 1918 pandemic Philadelphia did not impose a strict lockdown till later, St Louis acted immediately with a lockdown. St Louis emerged out of the 1918 pandemic returning to economic normalcy much earlier than Philadelphia. It is critical say the authors to understand that pandemic economics is not normal economics. There are both a supply side and demand side effects. China today is still suffering from significant loss of world demand as it struggles even though its manufacturing and its retail stores are gradually returning to normal. It will continue to struggle as long as demand remains very low in the rest of the world. And even though the services sector is larger today in U.S. and Europe than in 1918, with a smaller manufacturing sector, the pandemic effects and economics provide a useful comparison.  Japan provides an example of how the services sector less exposed to overseas demand and with Japan operating without lockdown sees its service sector absolutely hammered.  This WSJ report says it recorded a sharper slowdown than even the 2011 earthquake and tsunami. The authors of the study including from the MIT Sloan School of Management say they found no evidence that the cities that acted more aggressively in public health terms did worse in economic terms. If anything says MIT Sloan Asst, Prof. Vermer the cities that acted aggressively did better. The authors are specific, the cities that performed 50 days more of social distancing performed better in manufacturing employment by 6.5% after the pandemic ended through 1923. Earlier social distancing by 10 days translated into a 5% increase in manufacturing employment. ...

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Italy faces tighter restrictions and a national lockdown at Easter for the coronavirus, Italians who were the first to go into lockdown on March 10, 2020, now think they will be the last to exit lockdowns. The mood in Europe is of frustration with the slow vaccination drive and the failure to procure enough vaccine supplies and to approve vaccines in time. The US and Britain have vaccination drives that are moving rapidly leading to a reduction in cases and deaths. In Europe new cases are rising since mid February 2021, and there is the spread of the new variant first detected in the UK.  The variants make up 70% of new cases in France says Health Minister Olivier Veran. ICU's in France are 80% full. Elections in France in 2022 and in Germany in September 2021 are leading to government reluctance to impose tighter restrictions. The government strategy is now being questioned. Only 30% of Germans now have confidence in chancellor Merkel's ability to make competent decisions. The CDU's partner in the government, the SDU socialists have even less trust with SDU getting less than 10%. There are signs of a third wave of coronavirus in Germany resulting from variants of the virus, slow vaccinations, and reopenings. ...

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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 southern U.S. which was early to reopen the economy after the lockdown with some states having only partial lockdowns, is emerging from the coronavirus in much better shape than the rest of the U.S. The unemployment rate fell to 6.9% in August, the lowest of any region. The number of people employed was only 6% lower in August than in February, when most of the U.S. went into lockdown, compared with declines of 10.6% in the Northeast, 8.2% in the West, and 7% in the Midwest. Some of this was a result of aggressive reopening in Texas and other southern states. Overall deaths in the south were 60 per 100,000 people compared to 132 in the Northeast including New York and New Jersey, Midwest at 52, and West at 40. The Northeast numbers are high because of the elderly in nursing homes hit hard in New York and New Jersey.  In the southern states by comparison the deaths came later and among young people taking risks. The virus hit the northeast early and parts of the midwest, southern states had the advantage of some of the work already being initiated in March to fight the virus nationwide. Many of these states are also Republican and residents feared the virus much less. Republican Governors followed their instincts and aggressively reopened putting the economy first. The numbers tell the story. In South Carolina 44% of Republicans say they aren't afraid of the virus outbreak in the local area, compared to just 2% of Democrats, according to Civiqs poll. Georgia and Florida have similar numbers, all with Republican Governors. One factor favoring southerners is that cities in the south are much less dense and less populated than in the North and West. Smaller cities than Los Angeles and New York. ...

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Just as Democrats and Mr Biden learned from the experience of earlier lockdowns in the US and opened up the US economy in 2021 and 2022, China is now taking its own steps to move away from its earlier policies that affected the economy with frequent lockdowns and tight restrictions. There are some risks but in the long run this could get China to a better place after the people's fatigue with lockdowns that is similar to what happened in the US getting the US to where it is today.

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India enters a complete and total lockdown as no one is allowed outside in a country of 1.3 billion people lacking the public health systems found in Europe, China and the U.S. Experts say this was a needed step.

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Chinese president Xi Jinping is learning from the country's Covid experience in the way Biden and Democrats learned from their initial push for tighter restrictions in 2020-2021. Most covid restrictions, quarantines, testing is being lifted in China and efforts are being made to stabilize the economy hurt by frequent lockdowns, and a new path is being taken that responds to the Covid lockdown fatigue of the people.  This will lower Chinese growth below the central bank forecast of 3.3% for 2023, yet it also offers a learning curve for the Chinese leadership and new government that was put in place after the CCP party congress in 2022. This may be experimental in the short run but offer benefits for China and the world in the long term. For the first time it means China's trade tensions with the US are turning the corner in a way no number of tariffs and rhetoric could do between the two countries. The evidence- China's exports to the US have declined by 25% already in the last few months. Exports to the EU have declined as well by 11%. China's trade surplus in November 2022 showed a drop to $70 billion from $85 billion in October. ...

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Latin America becomes a major hotspot with deaths exceeding that in the U.S. and Canada. Calls for a lockdown of Colombia's capital Bogota. Mexico sees a surge in cases and Brazil's cases pass 2 million. California retrenches opening after a surge in cases. 

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The Times of London says that it has turned out the way the chief medical officer of England, Mr. Chris Witty,  has warned and predicted. That limited freedoms was as good as it could get, but there is hope for the future. With vaccinations starting by January the third wave can be prevented and more reopening can be done by then. The very fact that cases are beginning to fall shows that the lockdowns work where tiered restrictions did not work. 

The same situation can be seen in the U.S. where new lockdowns in midwestern states are beginning to cause a fall in daily cases.

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The contrast between lack of effective measures taken in the Lombardy region with the aggressive action in Veneto that has proved effective. Veneto followed the method of quarantining, mass testing for clusters and isolating the affected people.  The Italian government took the first steps to close off northern Italy Feb 22, and it was not till March 10 that a nationwide lockdown was done. The action taken in the Veneto region is shown here in this WSJ report with the town of Vo as an example of steps taken that worked. A microbiology professor and infectious diseases expert at the University of Padua, Dr Crisanti, developed a test for the coronavirus as early as mid-January using the information made public by Chinese doctors. Dr. Crisanti oversaw the testing of 95% of residents of Vo, a town of 3400 people in Veneto region. He found 3% of the population was infected, with half testing positive asymptomatic. Following the aggressive lockdown the tests were done two weeks later and the rate of infection had fallen to 0.1% with only 8 new infections. "The main lesson from VO is that when you have a cluster of infected people, you should do a very aggressive lockdown and then test as many people as possible," Dr Crisanti says. The results from Vo led to Veneto increasing testing in the rest of the region carrying out 80,000 tests, compared to 88,000 in Lombardy, with double the population and 5 times more infections. Lombardy followed government directives to test only those with symptoms. When it spreads it is harder to do the test isolate clusters, test isolate clusters, in a continual loop, yet this remains the method cited by Dr. Brx in the U.S. today as the right way to target clusters in a laser approach. In yesterday's briefing at the White House Dr Brx said this is a method the U.S. is familiar with and has used in Africa to tackle HIV, Ebola Virus. It is possible using GPS to target down to a specific clinic in a specific place, which is how it was successfully done in Africa. ...

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Japan lifts a state of emergency. Germany continues social distancing rules till the beginning of July. The U.S. stops visitors from Brazil entering the country. Moscow continues under a lockdown.

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The reopening of the economy is being stalled and lockdowns, restrictions, reinstated in July 2020 as the pandemic surges. The lockdowns are being reinstated in parts of Australia, in Bihar, India and other countries, and in other places such as California restrictions are back in place. Wearing masks in public spaces is also mandatory in Britain and France as prevention measures are being taken. In Japan wearing masks is a habit from before the pandemic. India, the U.S. and Brazil, Mexico are seeing a surge.