Omicron’s rapid rise in South Africa is what worries researchers most, because it suggests the variant could spark explosive increases in COVID-19 cases elsewhere. On 1 December, South Africa recorded 8,561 cases, up from the 3,402 reported on 26 November and several hundred per day in mid-November.
Vaccine uptake - the proportion of a population that gets vaccinated - can also influence vaccine effectiveness. When a large enough proportion of the population is vaccinated, herd immunity begins to come into play. Vaccines with moderate or even low efficacy can work very well at a population level. Likewise, vaccines with high efficacy in clinical trials, like coronavirus vaccines, may have lower effectiveness and a small impact if there isn't high vaccine uptake in the population.
Vaccine effectiveness is calculated the exact same way but is determined through observational studies. Early on, vaccines were well over 90% effective at preventing severe illness in the real world. But, by their very nature, viruses change, and this can change effectiveness. For example, a study found that by August 2021, when delta was surging, the Pfizer vaccine was 53% effective at preventing severe illness in nursing home residents who had been vaccinated in early 2021. Age, health issues.
Pfizer has reported that people who have received two doses of its vaccine are susceptible to infection from omicron, but that a third shot improves antibody activity against the virus. This was based on lab experiments using the blood of people who have received the vaccine.
Booster doses can increase the amount of antibodies and the ability of a person's immune system to protect against omicron.
Symptoms:
- Headaches,
- A sore throat,
- A runny nose,
- Feeling fatigued,
- Frequent sneezing
May all feel like a usual cold or a flu.
Home-remedies:
- Indian gooseberry,
- Turmeric Milk,
- Garlic/Ginger,
- fruits to boost Immunity (papaya, watermelon, guava, pomegranate, pineapple and banana and food with full of vitamin C),
- holy basil extract
Recently, the United States has also confirmed its first known Omicron in a fully vaccinated person in California who had travelled to South Africa. According to Dr Anthony Fauci, the top US infectious disease official, the infected person was fully vaccinated but was without a booster shot. The Biden administration urged vaccinated people to get booster shots after their initial doses. Five more cases were detected in New York.
Here’s a list of countries where the variant has been found:
1. Botswana – 19 cases
2. South Africa – 77 cases
3. Nigeria – Three cases
4. United Kingdom – 22 cases
5. South Korea – Five cases
6. Australia – Seven cases
7. Austria – One case
8. Belgium – One case
9. Brazil – Three cases
10. Czech Republic – One case
11. France – One case
12. Germany – Nine cases
13. Hong Kong – Four cases
14. Israel – Four cases
15. Italy – Nine cases
16. Japan – Two cases
17. Netherlands – 16 cases
18. Norway – Two cases
19. Spain – Two cases
20. Portugal – 13 cases
21. Sweden – Three cases
22. Canada – Six cases
23. Denmark – Four cases
As compared to other variants, Omicron has an increased risk of reinfection and has more number of mutations, according to the WHO.
At different points in the past two weeks, WHO officials have given statements that make joining the dots difficult. For instance, they have said that Omicron could “change the course of the pandemic”, and it could lead to vaccine hoarding. Then revised their initial surmise about the transmissibility of the variant by saying that the “exact impact of Omicron is still difficult” to ascertain. Much of these discrepancies are, of course, because the science on Omicron is an evolving one and the global health body is right in underlining a safety-first approach, especially when it’s about adopting the well-known Covid protocols, including masking and observing physical distance. However, the experience of the past two years shows that unequivocal messaging is amongst the key essentials of managing the social and economic fallout of the pandemic. The new variant has emerged at a time when the virus seems to be taking divergent trajectories in different parts of the world. Hospitals in large parts of the Western world are overburdened by the ravages of the Delta variant, while the pathogen seems to be at a low ebb in India, where schools and educational institutions are gradually beginning to resume physical classes. At such a juncture, it is critical that global health authorities carefully measure every statement against the prevailing science. The message of caution should be delivered while taking care to do nothing that might sound alarmist. It may not always be possible to avoid discrepancies in statements. But a careful explanation of the changed circumstances — the evolution of the state of knowledge, for instance — would do much to reassure people in a pandemic-weary world.
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