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A study shown in New England Journal of Medicine shows Pfizer vaccine 2 doses offers 88% protection from symptomatic disease for delta variant of coronavirus. The Astra Zeneca vaccine has 67% protection against delta variant after 2 doses.

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China's response to the delta variant of coronavirus and the difficulties it is facing.

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The variant first identified in India called the Delta variant is 60% more infectious than the Kent variant found in the UK. The Delta variant is now the dominant variant in the UK. There is concern that this could lead to another wave just as the UK is reopening in the summer. There are over 6000 daily cases in the UK this week. The estimated R number is now 1.00 to 1.2 following the number being 1.00 to 1.1 in the earlier week. A R number over 1.0 suggests greater spread of the coronavirus. An R number of 1.1 suggests the number of cumulative cases is taking off meaning that the UK is at risk of a sudden surge in the coronavirus in June or July 2021. India faced a wave from the new variant's higher rate of infectious spread. leading to a sudden surge in May 2021 to 400,000 daily cases before it was brought down by June 1 to about 100,000 The number of hospitalizations in such a wave is estimated to be higher in UK than the previous waves, requiring the government to be more vigilant today. Restrictions on travel from Portugal are being put in place in UK as a precaution. After repeated waves as a consequence of complacency with the coronavirus the lesson now is to take steps early and take aggressive action in advance. ...

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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 head of the European Centres for Disease Control ECDC, Dr. Andrea Ammon, says the Delta variant of the coronavirus will make up 70% of all cases in Europe by early August, and 90% of all cases by the end of August. ECD modeling shows that there is a risk of another wave like the one after last summer in Europe. The Delta variant is much more infectious than the UK Alpha variant and the UK variant much more infectious than the original variant. A 50% reduction in non-pharmaceutical interventions such as allowing the staging of events would lead to an increase in infection in all age groups. Latest ECDC data show 34% of people in Europe fully vaccinated and 57% with one dose. One dose offers much less protection. Younger individuals have a lower vaccination rate and are vulnerable. Also vulnerable are the older people not vaccinated yet. About 40% of people over 60 are not yet vaccinated, and 30% of people over 80 years are not yet vaccinated in the European Union. As in the US vaccination varies by region within the EU. All these vulnerable groups can be affected in another wave of the coronavirus similar to after last summer when restrictions were removed. Dr. Ammon is a former advisor to the German government. She says it is important for young people who are not vaccinated to continue to follow the strict social distancing precautions.  This is not happening today as governments are relaxing mask mandates in Britain, France and Spain. Soccer games are coming back to fan filled stadiums increasing the risk. Tourist spots in Portugal and Greece are now looking similar to the vacation spots in Croatia that increased infections in Europe after summer 2020. ...

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The third or booster dose of vaccine is needed to take out the Omicron variant. The UK Health Security Agency analyzed data from 581 Omicron cases and thousands of Delta cases to calculate how effective vaccines such as Pfizer and Astra Zeneca were against the Omicron variant. This early analysis shows a third booster dose prevents around 75% of people from getting any coronavirus symptoms. The double dose of the vaccine however provides good protection against severe coronavirus that needed hospital treatment says the UK Health Security Agency. Of equal concern is the rate of spread of the Omicron variant. Here this BBC report shows graphs of UK National Health Security Agency which show the rate of spread is rapid with cases doubling every 2-3 days. For the UK which on December 10 had about 1265 cases this means says this BBC report that the number of Omicron cases could be well above 100,000 in the UK by the end of December. The BBC graph shows the curve for Omicron cases moving in a close to vertical direction upwards. Reports say the experience in South Africa where the Omicron variant was first detected is similar in pattern causing rapid spread. ...

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The growing risk of coronavirus delta variant from the filled soccer stadiums in places such as Budapest, Hungary, St. Petersburg, Russia, Copenhagen, Denmark. Where many were not wearing masks and social distancing of any sort was not done. Covid researchers say the risk is real and DW.com looks at what is happening at the games in many European cities and stadiums in summer 2021.

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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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The Delta variant is bringing back the sense of how important a role masks play in controlling the pandemic even as more of the population gets vaccinated. Fan filled soccer stadiums and sports activities, entertainment activities, where social distancing is not practiced, is increasing risks of spreading the virus. Mask use is seen as an essential defense in preventing spread of the coronavirus worldwide and in every country.

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With only 4% of the people vaccinated in a population of 97 million Vietnam faces severe stress from the Delta variant. Ho Chi Minh City faces the effects of an extended lockdown. The outbreak of coronavirus and lockdowns have put millions of people out of work or on reduced pay.

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A look at countries in Europe shows different strategies for tackling coronavirus Delta variant as schools reopen in September 2021. Italy requires all teachers to carry a covid digital certificate that shows vaccination or PCR test results. France, Germany and Spain do not require vaccination for teachers to go to schools, and rely mostly on social distancing and mask requirements in schools. Britain not only does not require vaccination digital certificate, but also has not made masks and social distancing mandatory. Health experts say there are serious risks in this approach with mass return to schools and offices after August 2021, and the fall weather with more time indoors. This could lead to a surge in coronavirus as in the US where the reopening of schools and Delta variant has led to surge particularly in states such as Texas, Florida, California. In UK 65% of total population is now fully vaccinated, in Italy 62%. Teachers in Italy fully support the new rules. In Lombardy region with Milan as the capital, only 300 out of 300,000 workers returned to schools without the green pass, according to regional officials. Britain remains an outlier says this report in the WSJ, taking more risks than is proper at this time, and simply hoping for the best. Not the best strategy in this situation.   ...

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An India like surge is feared for Indonesia with the spread of the Delta variant and rising cases. Sudden spikes in Jakarta, central Java, and Bangkalan on the Java coast are straining hospitals. A nation of 270 million Indonesia has only a small vaccination program dependent on Sinovac vaccine from China, and only 5% are vaccinated.

Doctors say whether you are young or old have co-morbidities or not you can catch the coronavirus delta variant. Several members of a household can catch it and the deterioration happens quickly. Doctors in India made similar comments during the surge there in May 2021. Kudus region in central Java is typical. At first cases were declining from a January peak by May. Then cases jumped in June. A third of cases turned up positive for PCR tests.

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China faces risk of a surge inthe coronavirus in June 2021. The area in and around Guangzhou appears to be seriously affected. The city tested almost its entire population of 18.7 million between June 6 Sunday and June 8 Tuesday. This report shows pictures of a deserted Beijing airport, strict restrictions on foreign travel. The SinoPharm vaccine effectiveness against the Delta variant in India and UK is unknown. The government is locking down entire neighborhoods rather than entire cities or provinces.  As the risks of the Delta variant and other new variants increases most of the population even in the US and Europe have either no dose or one dose. Researchers at the University of New South Wales in Australia show the Astra Zeneca vaccine effectiveness with one dose at only 30%, only after two weeks following the second dose does the vaccine effectiveness reach about 70%. The population of China and India are so large that much larger parts of the population remain unvaccinated. In China with 1.3 billion people and even if the figure of 800 million doses stated by the government is accepted- it could be an overestimate as the US has only managed 300 million doses with many vaccines- most of the population is unprotected. Vaccine skepticism is high in China making vaccination an uphill task. SinoPharmvaccine is not as effective as Pfizer, Moderna, Astra Zeneca, or Covaxin vaccines, making the task even more of an uphill kind. ...

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A chaotic return of school children to school in September 2021 in most of Europe and America, because of a lack of clear statement on the rules to be followed for mask use, social distancing, and testing. Most children are also returning to school without vaccination.  It is also happening at this time in September when the Delta variant is spreading. US president Biden's decision for vaccine mandate for 100 million or two thirds of American workers comes at this time of uncertainty in schools about the future and coronavirus variant. In the US rules are being set school district by school district, at a time when vaccines are not approved for children under 12 years. One leading school administrator in the US says "it's as chaotic as you can get."

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The US has a history of vaccination mandates, going back to the Revolutionary War under George Washington when all soldiers in 1777 were required to be vaccinated and Boston required the population to be vaccinated in 1809 for smallpox. Vaccine mandates were adopted during the measles, and diphtheria vaccination campaigns, and for other diseases. It is only through the mandates that these diseases were controlled. The coronavirus is no different as states and cities across the US take up mandated vaccination to avoid taking any risks with the fast spreading Delta variant.

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Risks are increasing in the southeast and midwestern states in the US where vaccination rates are as low as 30%. The Delta variant of coronavirus is now the dominant virus strain in the US. It is highly transmissible, estimated to be about 50% more transmissible than the original virus. The region covering Missouri, Iowa, Kansas and Nebraska, as well as Wyoming is affected, in addition to the southeastern states, as these states have lower rates of vaccination and vaccine skepticism. As communities in the US and UK reduce pandemic restrictions and open for the summer the risks of last year are being brought up by experts. 

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Already vaccination experts at the Baylor College of Medicine cited here say they foresee another wave of the coronavirus in the Southern US because of vaccine skepticism barriers to vaccination, and much of the population not being vaccinated. The percentage of the population in the Carolinas, Georgia, Georgia and Louisiana, that has both doses of vaccine is low. About 50% have had just one dose. In southern states Mississippi and Alabama the vaccination rates are much lower leaving large parts of the population unvaccinated. The widespread presence of the Delta variant in the UK and the R rate being between 1.00 and 1.2 in UK shows that the UK even with higher vaccination rates than the US is still facing a danger of another wave as it reopens.  The ominous aspect of this is that from just over 400,000 the vaccinations per day dropped to 316,000i n the US. This means there will be a period when vaccination drive is stalled while the reopening is fully underway with a new contagious variant twice as contagious as the original coronavirus. This leaves the US at risk of another wave, with the south and western US, younger people who are out more and unvaccinated, more at risk.  ...

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The Biden vaccination target of 70% of American adults at least partially vaccinated with one dose by July 4, 2021 remains elusive as vaccination rates have dropped. From a high of 2 million a day vaccinations have dropped to 400,000 a day during the first week of June 2021. Vaccination skepticism particularly in the south and western part of the US is making it harder to vaccinate the rest of the US population. This poses increasing risks as the new variants of the virus such as the Delta variant found in India, and now the most widely prevalent strain of virus in the UK, remain a serious problem. The unvaccinated population in the US is too large for any degree of safety in numbers vaccinated. Consider that at the press briefing given by the White House on June 3, 2021, only 28 states out of 51 states have fully vaccinated 50% or more of their population. There is a large variation between different states with states in the south such as Mississippi as low as 34% at least one dose and a similar situation in Alabama. In Arkansas, Georgia, Carolinas, and Louisiana  it is higher at about 50% with at least one dose. Even these figures are deceiving as in some parishes in Louisiana only 20% have even one dose. Studies show that only after the second dose are enough antibodies released to protect well against coronavirus. This is why vaccine experts at Baylor College of Medicine cited in NYT foresee a second wave in the southern US because of the South so underachieving in the case of vaccination.  ...

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The experience of Pintung county in Taiwan with a coronvirus outbreak is shown in The Guardian. Home quarantining of a couple from Peru leads to an outbreak. Community cooperation, a speedy response from local health authorities, testing and quarantining help to limit and control the outbreak. When it started this county on the coast, one of the poorest in the country, had limited health resources and no one was vaccinated. Most of the control response was through testing and quarantine, with vaccination assistance from the Taiwan government. Local people say strict quarantine is essential as the source of infections was from a couple who visited Peru and were allowed to home isolate. Taiwan government is now enforcing quarantine at hotels for all persons returning from overseas. WHO Emergencies program head, Dr Michael Ryan, says it is important to act quickly. He says "Be fast, have no regrets. You must be the first mover. The virus will always get you if you don't move quickly."  This happened in this Taiwan county as the local health authorites setup a soft lockdown of the two affected villages within 3 days of detecting the first case of Delta variant. This was announced over loudspeaker and food plus daily necessities were delivered to each household. A command centre was setup to take and coordinate the action daily. Taiwan authorites have enforced repeat testing and extended testing. ...

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The US vaccination drive appears to be stalling when it comes to getting younger people vaccinated. On a recent day 1.13 million persons were vaccinated. About 150 million Americans are fully vaccinated or about 47% of the population. About 53% of the population have one dose. This still leaves the rest of the population close to one half unvaccinated as the US is opening up fully and removing the social distancing and mask mandates that existed before. The problem is that the coronavirus delta variant is about twice as transmissible than the original coronavirus of March 2020. Vaccination is uneven across the US. Large parts of the southern states and the western states lag behind. In these areas as well as areas with large urban concentrations of population, the densely populated cities where social distancing and mask mandates are being lifted as if the coronavirus crisis is over, are at risk of seeing a more powerful virus spread quickly before gene sequencing catches up with new variants- making the response lag behind in terms of weeks. That lag in response could lead to another wave in the US. Consider also that tourism is opening up in Europe with removal of mask mandates, that gene sequencing to track variants is tiny in even countries such as Italy and France. A WSJ report on June 22 shows gene sequencing to track variants at 1% of positive tests in Italy, and virologists in Italy saying they feel as if they are flying blind. This report in the Washington Post says surveys show as many as one third of Americans have no immediate plans to get vaccinated. This is showing up in the low numbers for the vaccination drive, of around 1 million a day at this time in June 2021. In April this was 3 million vaccine doses adminstered on a single day on average. India where the new delta variant has had the most serious impact has stepped up its response with the federal government taking complete responsibility for vaccine supplies and vaccination drives. It is now vaccinating aggressively in the range of 6 million to 8 million doses a day during the last 7 days with a plan to ensure enough vaccine supplies for 1.2 billion people to get vaccinated by December 31.  The European Union and the US have  vaccinated just over 50% of their population for a variant that is more than twice as transmissible than the original virus. This leaves the unvaccinated at real risk because all the social distancing and mask mandates that existed earlier are being removed- in the US, in France, in Italy, and other countries. Soccer stadiums are filling up in Europe, the kind of sports events that later hit Bergamo, Italy, in March 2020. Summer tourism is back in Portugal and Greece. The best intentions will not be enough. Are mask and social distancing protocols being lifted too quickly especially in tourist locations reminiscent of last summer in Europe and elsewhere. Germany and Britain are holding on to them a bit longer. Will this be enough to tackle a new variant. ...

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Most American large companies support president Biden's decision to mandate vaccinations for all employers with more than 100 employees. Smaller business also supports the decision as it makes this decision for them. The US Business Roundtable of the largest US companies issued a statement saying it "welcomes the Biden Administration's continued vigilance in the fight against Covid." It went on to applaud the decision of some companies to implement a vaccine mandate before the president's decision. Companies would like to see a rapid ramp up in testing capacity as they see testing capacity levels not the vaccine mandate as the real problem today with the surge in Delta variant. These companies such as Target, Nike, and retailers see testing capacity as "stressed" and say "testing capacity must be scaled immensely to meet the new requirements." Labor unions clearly support president Biden's decision including teachers associations, and the AFL-CIO. Some companies including Delta Airlines are imposed health surcharges for unvaccinated employees, and United Airlines has brought in its own vaccine mandate. The president's vaccine mandate has broad and deep support of the American people and business, according to this WSJ report, with recognition of the huge risks posed by the transmission rates of the Delta variant in the surge of coronavirus in September 2021. However companies say the Biden Administration has to scale up testing capacity quickly to make it work. ...