The Omicron Variant: Prevalence, Transmissibility, and Pathogenicity



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Submitted Feb 25, 2022
Published Jun 1, 2022
10.24018/ejmed.2022.4.3.1258

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The Omicron variant that caused a huge surge in COVID-19 infections worldwide has been studied in terms of prevalence, infectivity, and virulency. The first study conducted in South Africa showed the low pathogenic nature of the Omicron variant compared to the Delta and original Wuhan variants. The deaths, ICU admissions, length of the hospital stay, and also the need of oxygen support all reduced greatly in Omicron infected patients as compared to the earlier variants. The share of the Omicron variant in Delhi (India) rose rapidly. In two weeks (December 21, 2021-January 3, 2022), the omicron prevalence increased from 38% to 81%. Because of the Omicron variant, in the last week of January 2022, Delhi’s caseload surged nine folds. The cases analysed in Delhi, Mumbai, and throughout India revealed that the number of deaths during the Omicron wave was much lower compared to the Delta and Wuhan variants.

Keywords: Delta variant, Omicron variant, Omicron prevalence and transmissibility, Omicron pathogenicity, SARS-CoV-2 mutation

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References

  1. COVID-19 pandemic pushed over half a billion into extreme poverty: UN report, The Asian Age, December 13, 2021.
     Google Scholar
  2. With 5,784 new cases, India's daily Covid-19 tally sees 21.3% fall, Hindustan Times, December 14, 2021.
     Google Scholar
  3. U.S. COVID-19 death toll passes 800,000, Japan Today, December 15, 2021.
     Google Scholar
  4. ourworldindata.org/coronavirus.
     Google Scholar
  5. 3 charts show how far Covid delta variant has spread around the world, CNBC.com, August 5, 2021.
     Google Scholar
  6. Omicron can hit fully vaccinated, Oxford study says, as UK prepares for tidal wave of cases, CNBC.com, December 13, 2021.
     Google Scholar
  7. Pfizer and BioNTech say booster dose provides high level of protection against omicron variant in initial lab study, CNBC.com, December 8, 2021.
     Google Scholar
  8. Amid omicron fears, Japan weighs shorter interval for COVID-19 booster shots, The Japan Times, December 2, 2021.
     Google Scholar
  9. Tokyo researchers work toward ‘dream’ COVID-19 vaccine that gives protection for life, The Japan Times, December 29, 2021.
     Google Scholar
  10. Z. Shervani, D. Bhardwaj and R. Nikhat, “Dharavi Slums (Mumbai, India): The Petri Dish of COVID-19 Herd Immunity,” European Journal of Medical and Health Sciences, 3(3): 38-41, 2021.
    DOI  |   Google Scholar
  11. Z. Shervani, “COVID-19 in Kerala: Health Index Theory,” European Journal of Medical and Health Sciences, 3(2), 21-24, 2021.
    DOI  |   Google Scholar
  12. Z. Shervani, “COVID-19 in Kerala: The Dynamics of Spread and Health Index Theory,” RAS Medical Science, 1(2), 1-3, 2021.
    DOI  |   Google Scholar
  13. Z. Shervani, D.Bhardwaj and R. Nikhat, “COVID-19 Infection in India: Seropositivity versus the Dynamics of the Spread,” European Journal of Medical and Health Sciences, 3(4):95-99, 2021.
    DOI  |   Google Scholar
  14. Z. Shervani, D.Bhardwaj, A. Sherwani, I. Khan, and U.Y.Qazi, “COVID-19 Infection in 8 Big Cities of India: The Dynamics of the Spread and Seropositivity,” European Journal of Medical and Health Sciences, 3(6):1-5, 2021.
    DOI  |   Google Scholar
  15. Z. Shervani, I. Khan, N. Y. Siddiqui, T. Khan and U. Y. Qazi,“Viability of SARS-CoV-2 and Sanitization Methods,” European Journal of Medical and Health Sciences, 3(1): 22-27, 2021.
    DOI  |   Google Scholar
  16. Z. Shervani, I. Khan, N. Y. Siddiqui, T. Khan and U. Y. Qazi, “Risk of SARS-CoV-2 Transmission from Humans to Pets and Vice Versa,” European Journal of Medical and Health Sciences, 3(1): 34-38, 2021.
    DOI  |   Google Scholar
  17. Z. Shervani, I. Khan, T. Khan and U. Y. Qazi, “World’s fastest supercomputer picks COVID-19 drug,” Advances in Infectious Diseases, 10(3): 211-225, 2020.
    DOI  |   Google Scholar
  18. Z. Shervani, I. Khan and U. Y. Qazi, “COVID-19 vaccine,” Advances in Infectious Diseases, 10(3):195-210, 2020.
    DOI  |   Google Scholar
  19. Z. Shervani, I. Khan and U. Y. Qazi, “Sars-cov-2 delayed Tokyo 2020 olympics: Very recent advances in covid-19 detection, treatment, and vaccine development useful conducting the games in 2021,” Advances in Infectious Diseases, 10(3): 56-66, 2020.
    DOI  |   Google Scholar
  20. Z. Shervani, D. Bhardwaj, R.Nikhat, A. Ibbrahim, I. Khan, U. Y. Qazi, A. Agarwal, A. A. Khan, S. Hasan, and A. Sherwani, 4th National Sero Survey of India: Vaccine Generated Antibodies Enhancement, European Journal of Medical and Health Sciences, 4(1):27-32, 2022.
    DOI  |   Google Scholar
  21. Z. Shervani, D. Bhardwaj, R. Nikhat, A. Ibbrahim, I. Khan, S. Hasan, U. Y. Qazi, A. Agarwal, A. A. Khan, and A. Sherwani, 5th and 6th Sero Survey of Delhi: Vaccine Activated Antibodies Enhancement, European Journal of Medical and Health Sciences, in press.
     Google Scholar
  22. Omicron study in South Africa points to end of acute pandemic phase, The Japan Times, January 8, 2022.
     Google Scholar
  23. F Abdullah, J Myers, D Basu, G Tintinger, V Ueckermann, M Mathebula, R Ramlall, S Spoor, T de Villiers, Z Van der Walt, J Cloete, P Soma-Pillay, P Rheeder, F Paruk, A Engelbrecht, V Lalloo, M Myburg, J Kistan, W von Hougenhouck-Tulleken, MT Boswell, G Gray, R Welch, L Blumberg, W Jassat, DECREASED SEVERITY OF DISEASE DURING THE FIRST GLOBAL OMICRON VARIANT COVID-19 OUTBREAK IN A LARGE HOSPITAL IN TSHWANE, SOUTH AFRICA,],[internet] [cited December 28, 2021.
    DOI  |   Google Scholar
  24. https://sacoronavirus.co.za/latest-vaccine-statistics/
     Google Scholar
  25. Our World in Data (South Africa vaccination record) ferences
     Google Scholar
  26. Omicron constitutes 46% of total Covid-19 cases in Delhi: Satyendar Jain, Business-standard.com, December 30, 2021.
     Google Scholar
  27. 81% Covid-19 Samples In Delhi, Omicron Positive: Health Minister Satyendar Jain, Outlook.india.com, Cited January 3, 2022.
     Google Scholar
  28. Delhi:Genome sequencing reveals omicron variant in 38% samples from city, India Today, December 30, 2021.
     Google Scholar
  29. Omicron found in Delhi's 65 per cent samples between January 1 and 3; city sees significant jump in deaths, hospitalisations, thehansindia.com, Cited January 6, 2022.
     Google Scholar
  30. covid19bharat.org
     Google Scholar
  31. Coronavirus (COVID-19)-Google News.
     Google Scholar
  32. Mumbai covid genome sequencing: only 2 of 211 samples show Omicron presence, India Today, December 9, 2021.
     Google Scholar
  33. ‘No Omicron community spread in Mumbai so far’ The Times of India, December 16, 2021.
     Google Scholar
  34. In Mumbai, Omicron found in 37.6% of Covid-19 samples taken from the community, Scroll.in, December 30, 2021.
     Google Scholar
  35. Omicron found in 55% samples of Covid patients in Mumbai, Delta in 13%:BMC survey, India Today, December 31, 2021.
     Google Scholar
  36. Omicron in all 73 samples collected in Nagpur, The Times of India, January 14, 2022.
     Google Scholar
  37. Omicron variant found in 96% of 53 Covid cases sequenced by Neeri lab, The Times of India, January 10, 2022.
     Google Scholar
  38. Covid19india.org
     Google Scholar


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