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Editorial
. 2021 Dec 23;11(1):30.
doi: 10.3390/jcm11010030.

Relative Reproduction Number of SARS-CoV-2 Omicron (B.1.1.529) Compared with Delta Variant in South Africa

Hiroshi Nishiura  1 , Kimihito Ito  2 , Asami Anzai  1 , Tetsuro Kobayashi  1 , Chayada Piantham  2 , Alfonso J Rodríguez-Morales  3   4   5
Affiliations
Editorial

Relative Reproduction Number of SARS-CoV-2 Omicron (B.1.1.529) Compared with Delta Variant in South Africa

Hiroshi Nishiura et al. J Clin Med. .

Abstract

The world identified the rapidly increasing incidence of the causative variant of SARS-CoV-2 Pangolin B [...].

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
Transmissibility assessment of Omicron variant. (A) Estimated temporal changes in SARS-CoV-2 variant relative frequencies of Delta (Green), Omicron (Red), and other variants (Purple) circulating in Gauteng, South Africa, 16 September to 22 November 2021. Marks represent observed data, while lines are from predicted model. (B) The relationship between the protective effect of acquired immunity and the relative transmissibility of Omicron variant compared with Delta variant. ω represents the immune fraction in South Africa. Rdelta/Romicron is the ratio of the basic reproduction number of Delta variant to that of Omicron, i.e., 1.5 indicating that Delta is more transmissible in a naïve population, 1.0 equally transmissible, and 0.5 indicating that the intrinsic transmissibility of Omicron is twice as large as that of Delta variant.
See this image and copyright information in PMC

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