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The UN Biodiversity Conference will now be held in Montreal in December 2022 instead of being postponed to 2023 for its Kunming, China location. China has delayed large events including the Asian Games to be held in the country because of its zero Covid policy. China has faced repeated lockdowns in 2021 and 2022 even as the world was opening up after vaccination campaigns and milder symptoms for Omicron cases.

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Omicron cases are up in an almost vertical line on a graph with cases doubling every 2-3 days in the UK, similar to the pattern in South Africa during the beginning of the spread in South Africa. Since then early data in South Africa show the trend in the province of Gauteng, center of the omicron outbreak in South Africa in the Johannesburg area, has reached its peak. On Dec. 16 it recorded 27% of national infections compared to 70% the week before. Head of the National Institute of Communicable Diseases in South Africa, Michael Groome, says "we had areally dramatic increase in Gauteng, which has now leveled off."  Hospital admissions in South Africa show a different pattern than earlier hospital admission rates in previous waves, with only 1.7% of cases being hospitalized in this Omicron wave compared to 19% for the Delta variant wave at a similar point in the wave, says Health Minister Joe Phaahla. In UK as of Dec. 14, this WSJ report cites health authorites saying 73% of cases in London are omicron variant, doubling every 1-2 days, with omicron making up 41% of all cases in England. In the US the Centers for Disease Control show Omicron variant making up 2.9% of all cases in US as of Dec. 11, with highest concentration in New York, New Jersey of 13.1%. Proportion of positive tests went up from 3.3% to 5% in New York City. A convention in New York City, Anime convention at Javits Center, November 23, 2021, shown in a recent NYT report, could potentially have acted as a super spreader event in New York according to NYT though not confirmed, similar to football stadiums events in Italy in March 2020. Dense atmosphere and large crowds increase the risk of a super spreader event happening, say experts. ...

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This analysis in The Times looks at the latest information on the omicron variant gathered in the UK and what it means for the capital London and the UK. It looks at the hospital admissions in January 2021 that could be expected in the UK compared to  January 2020. A big spike infections with a sharp fall is the scenario seen as expected based on experience in South Africa, with 2% of cases as hospital admissions as in the prior January, or in a "milder" scenario somewhat smaller percentage.

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South Africa feels a sense of relief as omicron cases follow a pattern of very steep upward increase, followed by a short period of a month, and then a very steep decrease. Cases in South Africa with a population of 60 million, about the size of Britain, dropped from 27,000 at the peak to about 15,000 on December 21, 2021. The area around Johannesburg was hardest hit. The median age is 27 years in South Africa, 40 in UK and 43 in Italy. With younger populations in India and parts of Asia South African population demographic is closer to India than it is to Europe where populations are much older. Scientists do not want to extrapolate from the South African experience with Omicron for this reason. Immunity from vaccination and prior infection could be contributory causes to the less severity of omicron say NCID scientists. "In South Africa this is the epidemiology. Omicron is behaving in a way that is less severe," says Dr. Cheryl Cohen, of the National Institute for Communicable Diseases (NCID). "Compellingly together our data really suggest a positive story of a reduced severity of omicron compared to other variants," he said at a conference with other scientists on Wednesday, Dec. 22.  ...

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Latin America has made a huge turnaround through successful vaccination drives. Today more people are vaccinated as a percentage of the population in Latin America at 62% than in the US at 56% or Europe at 60%, according to Our World in Data project at Oxford University. There is little resistance to vaccines in Latin America after successful vaccine campaigns against yellow fever and other diseases. During the first year of the pandemic Latin America had one third of the deaths in the world with 8% of the population. Deaths after vaccination drives have dropped to 8%.  Brazil with 617,000 deaths from coronavirus was second only to the US with 800,000 deaths. Brazil is now back to normal after a successful vaccination drive that has 66% of the population fully vaccinated, and 80% with one dose, some of the highest rates in the world, according to Our World in Data at Oxford University. In Colombia with 50 million population about 50% of people are fully vaccinated. Cases have dropped from 30,000 in June to 2000 a day and deaths from 700 daily that month to 50 a day in December 2021. In Buenos Aires, Argentina's capital, 83% of three million population are fully vaccinated, 14% have received a booster. Buenos Aires city health minister says Argentine society has an affinity for vaccination campaigns. "They rapidly accepted receiving them," he says. Yet from the point of view of new variants emerging there is a different situation in rural areas. In industrial states such as Sao Paulo 78% are fully vaccinated, yet less than 40% are fully vaccinated in poor Amazon state of Roraima.   We make it a point to honor the brave reporters in these countries who provide the reports in the WSJ, as we did earlier for NYT Stephanie Nolan's reports from South Africa and Zambia about frontline workers against Omicron in Africa.  Luciana Magalhaes in Sao Paulo, Jenny Carolina Gonzalez in Bogota, and Sylvina Frydlewsky in Buenos Aires and Kejal Vyas writing this report from San Salvador. ...