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The Moderna and Pfizer vaccines are effective against the virus variant identified in Britain. It is less effective against the virus variant from South Africa. The U.S. banned all travel to and from South Africa effective Jan 30. U.S. coronavirus cases were at 125,000 on Jan 24 down 20% for the week. 

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Protection from hospitalization for Omicron variants can drop to 57% from 81% after 6 months from second dose, and can be pushed back up to 90% using booster shots for Pfizer and Moderna vaccines, according to a large CDC study in the US. For Delta variant period last year the vaccine effectiveness against hospitalization was 90% from about two weeks after dose two till 6 months, dropping to 81% after 6 months, and up to 94% after a booster shot. For Omicron variant the currently vaccine effectiveness for same periods is 81%, 57%, and 90%.

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Moderna has made the initial batches of doses of the vaccine for the variant of coronavirus including South African variant, and shipped these to the National Institutes of Health in the US. If the test results are positive the vaccine for variant could be given authorization by the third quarter of 2021. It is becoming crucial to stay ahead of variants developing from the coronavirus and pharmaceutical companies Pfizer, J&J, Astra Zeneca are working on the technology to tackle this.

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In this interview in The Hindu with Public Health Foundation of India president Srinath Reddy, the importance of safe behaviours including masks and social distancing, public discipline to tackle a potential third wave. This was also pointed out separately by the Director AIIMS.  Mr. Reddy says study by Public Health England shows just one dose of Astra Zeneca vaccine is not very effective against the Delta variant- about 30% effective. As a result he suggests the need to reduce the spacing intervals which are at 8-12 weeks to a shorter interval now that adequate supplies of vaccine will be available starting in July and August till the end of the year. The initial spacing was 4 weeks when Astra Zeneca vaccine was first introduced and at which time the variants had not emerged. The Indian federal government affidavit to the Supreme Court shows that 1880 million doses of vaccine will be available by the end of the year 2021 to vaccinate fully with 2 doses the population of India over 18 years using 5 locally manufactured Made in India vaccines. This does not include the mRNA vaccines that will be made available from Moderna and Pfizer for which cold storage facilities are being prepared by the federal government.   ...

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Pfizer and Moderna's plans to make mRNA vaccines in Africa, Asia or Latin America may take much longer than 2022. The solution to producing an mRNA vaccine in Asia that could be mass manufactured and distributed throughout Africa, Asia and Latin America is now at hand. Gennova based in India, is partnering with Seattle startup HDT Bio to attack the problem of temperature and scalability in manufacturing for a mRNA vaccine that acts as a global solution using India's manufacturing capabilities. Dr Singh who founded Gennova, says- "We wanted to solve the problem of the scalability issue, and the temperature issue. If we can solve these problems, we are building a solution not just for India, but also a global solution." Gennova received seed funding from the Indian government. Other companies in Brazil and South Africa lack the manufacturing capabilities or financing needed that exist in India. The Indian government has achieved an initial goal of one billion vaccinated in just 6 months. The next step for India in its health infrastructure buildup is a mRNA vaccine that is an improvement over Pfizer and Moderna vaccines that can be stored easily, adapted for variants, and manufactured in large quantity as a global solution. ...

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With more vaccines available from Pfizer and Moderna, and the poor SinoVac Chinese vaccine effectiveness against the Delta variant, Brazil and other countries in Latin America and Asia are shifting away from Chinese vaccines. Brazil's federal government has halted negotiations for additional doses of Chinese vaccines. In the early stages in 2020 Chinese vaccines helped Brazil cope with the devastating rise in cases. The slow pace of vaccinations in US and Europe has freed up more vaccine doses of Pfizer for other countries including Brazil. From accounting for 80% of vaccines in Brazil early in 2020, SinoVac vaccines now make up only 35% of Brazil's vaccine doses. At that time Brazil bought 100 million doses of SinoVac vaccine which were delivered. The local producer of SinoVac vaccine, the Butantan Institute will no longer make Chinese vaccines. While Sinovac vaccines are effective at preventing deaths, the vaccines have a low effectiveness rate for symptomatic infections. ...

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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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The key role played by National Institutes of Health scientists in the development of the Moderna covid vaccine was not accepted in the application for patents by Moderna, leading to a dispute with the NIH. Moderna has now dropped the patent application saying it is a distraction on work for tackling the Omicron variant. That patent application had not listed scientists of NIH who worked on the invention.

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German Heath Minister Karl Lauterbach says vaccine mandates are the only way out of this pandemic. Speaking to German daily Welt he said, gaining immunity through infection was a "dirty vaccination" that made little sense as it would not protect one against a more harmful variant. He saiid that it "would be naive to think that omicron is the end of the pandemic." Omicron would not make one immune to the next viral variant. "No one can guarantee that a variant will not develop soon that is much more dangerous."

Lauterbach says 25 million doses of the Moderna vaccine have been procured that would be enough for 50 million booster shots to be done in the first quarter of 2022.

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Dr. Ezekiel Emmanuel of the University of Pennsylvania gives this early warning on the risks of the sudden U turn in China's zero covid policy to complete reopening. He says the switch from zero covid to population wide immunity via viral spread is coming on too suddenly without preparation. He says China made three mistakes. First, the economic cost of zero covid that dropped growth and created high youth unemployment of over 20%. Second, not procuring Pfizer and Moderna mRNA vaccines with newer technologies. Third, moving to abruptly end the zero covid policy 180 degrees in a sudden move that lacks preparation. Precipitiously ending the zero covid policy for 800 million people means rapid spread says Dr. Emmanuel. He says the key variable the R statistic that measures how many people get infected from one covid patient on average, has moved from 2 to 3 during the early stages of the pandemic to 10 with the omicron variant. Chinese officials report the R to be at 16 in China today, says Dr. Emmanuel. ...