ABSTRACT
China has been attacked by its largest outbreaks of COVID-19 since March. Pervasive arguments about prevention policy arose among people in China and around the world. Complete and accurate statistical analyzes of cases of contraction with SARS-CoV-2 in China are given under the conditions of strict mandatory quarantine and isolation, and of a high rate of full vaccination. This study reveals the essential reasons why China has been and will be adhering to its “dynamic zero-COVID policy” which stands in contrast to a global trend towards easing restrictions and attempting to co-exist with the circulating virus, including choice uniqueness, difference of case symptomatic rates, unpredictability of transmission, worries of burden to medical system, successful reducing to zero the number of each active chain of transmission, and outstanding economy achievements, etc. This study may bring new thoughts for correction of present epidemiological theory and mathematical models, as well as new theoretical supports for the prevention policy making. It may also give other countries time to be better prepared for the coming 6th wave driven by Omicron variant.
Subject(s)
COVID-19ABSTRACT
A complete and accurate statistical analysis of cases of contraction with SARS-CoV-2, under theconditions of strict mandatory quarantine and isolation and of a high rate of full vaccination,during the largest COVID-19 outbreaks driven by the Omicron BA.2 subvariant in China are given.SARS-CoV-2 is still new, and little is known about either its directions of variations or its laws ofpropagation. No country other than China has been able to disclose every case of infection inevery epidemic or outbreak since April of 2020. Here, this study reveals that Omicron BA.2subvariant can still spread very fast and wide in areas with strict “dynamic zero-COVID strategy”1in China, that there exist cities twenty-fold differences in morbidity rates unrelated to any of theknown factors contributing to incidence of infectious diseases, and that Omicron BA.2 subvariantis unpredictable in its virulence, although its severity rate of symptomatic cases is low. Thisanalysis provides first-hand original and valuable information for further research on similarepidemics in the future. It may bring new thoughts for correction of present epidemiologicaltheory and mathematical models. It may also give other countries time to be better prepared forthe coming 6th wave driven by Omicron BA.2.
Subject(s)
COVID-19ABSTRACT
A complete and accurate statistical analysis of cases of contraction with SARS-CoV-2, under theconditions of strict mandatory quarantine and isolation and of a high rate of full vaccination, during the largest COVID-19 outbreaks driven by the Omicron BA.2 subvariant in China are given. SARS-CoV-2 is still new, and little is known about either its directions of variations or its laws of reproduction. No country other than China has been able to disclose every case of infectioninevery epidemic or outbreak since April of 2020. Here, this study reveals that Omicron BA.2subvariant can still spread very fast and wide in areas with strict “dynamic zero-COVID strategy” 1 in China, that there exist cities twenty-fold differences in morbidity rates unrelated to any of theknown factors contributing to incidence of infectious diseases, and that Omicron BA.2 subvariant is unpredictable in its virulence, although the rate of severe confirmed cases is low. This studyprovides first-hand original and valuable information for further research on similar epidemics inthe future and raises discussions about the possible correlation related to quantumeffects andabout the quantum evolution of SARS-CoV-2 Omicron variant which may finally bring COVID-19Pandemic to end. It may bring new thoughts for correction of present epidemiological theory andmathematical models. It may also give other countries time to be better prepared for the comingwaves driven by Omicron variant.