tetano
Editor, Senior Moderator
PLoS One
. 2022 Jan 12;17(1):e0252994.
doi: 10.1371/journal.pone.0252994. eCollection 2022.
The impact of invisible-spreaders on COVID-19 transmission and work resumption
Chao Wu[SUP] 1 2 [/SUP], Cong Xu[SUP] 1 [/SUP], Feng Mao[SUP] 3 [/SUP], Xiaolin Xu[SUP] 4 5 [/SUP], Chan Zhang[SUP] 6 [/SUP]
Affiliations
Abstract
The global impact of coronavirus disease 2019 (COVID-19) is unprecedented, and many control and prevention measures have been implemented to test for and trace COVID-19. However, invisible-spreaders, who are associated with nucleic acid detection and asymptomatic infections, have received insufficient attention in the current COVID-19 control efforts. In this paper, we analyze the time series infection data for Italy, Germany, Brazil, India and Sweden since the first wave outbreak to address the following issues through a series of experiments. We conclude that: 1) As of June 1, 2020, the proportion of invisible-spreaders is close to 0.4% in Sweden, 0.8% in early Italy and Germany, and 0.4% in the middle and late stages. However, in Brazil and India, the proportion still shows a gradual upward trend; 2) During the spread of this pandemic, even a slight increase in the proportion of invisible-spreaders could have large implications for the health of the community; and 3) On resuming work, the pandemic intervention measures will be relaxed, and invisible-spreaders will cause a new round of outbreaks.
. 2022 Jan 12;17(1):e0252994.
doi: 10.1371/journal.pone.0252994. eCollection 2022.
The impact of invisible-spreaders on COVID-19 transmission and work resumption
Chao Wu[SUP] 1 2 [/SUP], Cong Xu[SUP] 1 [/SUP], Feng Mao[SUP] 3 [/SUP], Xiaolin Xu[SUP] 4 5 [/SUP], Chan Zhang[SUP] 6 [/SUP]
Affiliations
- PMID: 35020722
- DOI: 10.1371/journal.pone.0252994
Abstract
The global impact of coronavirus disease 2019 (COVID-19) is unprecedented, and many control and prevention measures have been implemented to test for and trace COVID-19. However, invisible-spreaders, who are associated with nucleic acid detection and asymptomatic infections, have received insufficient attention in the current COVID-19 control efforts. In this paper, we analyze the time series infection data for Italy, Germany, Brazil, India and Sweden since the first wave outbreak to address the following issues through a series of experiments. We conclude that: 1) As of June 1, 2020, the proportion of invisible-spreaders is close to 0.4% in Sweden, 0.8% in early Italy and Germany, and 0.4% in the middle and late stages. However, in Brazil and India, the proportion still shows a gradual upward trend; 2) During the spread of this pandemic, even a slight increase in the proportion of invisible-spreaders could have large implications for the health of the community; and 3) On resuming work, the pandemic intervention measures will be relaxed, and invisible-spreaders will cause a new round of outbreaks.
