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Intercontinental transmission and local demographic expansion of SARS-CoV-2
- Source :
- Epidemiology and Infection
- Publication Year :
- 2021
- Publisher :
- Cambridge University Press (CUP), 2021.
-
Abstract
- The global outbreak of coronavirus disease 2019 (COVID-19) is greatly threatening the public health in the world. We reconstructed global transmissions and potential demographic expansions of severe acute respiratory syndrome coronavirus 2 based on genomic information. We found that intercontinental transmissions were rare in January and early February but drastically increased since late February. After world-wide implements of travel restrictions, the transmission frequencies decreased to a low level in April. We identified a total of 88 potential demographic expansions over the world based on the star-radiative networks and 75 of them were found in Europe and North America. The expansion numbers peaked in March and quickly dropped since April. These findings are highly concordant with epidemic reports and modelling results and highlight the significance of quarantine validity on the global spread of COVID-19. Our analyses indicate that the travel restrictions and social distancing measures are effective in containing the spread of COVID-19.
- Subjects :
- demographic expansions
0301 basic medicine
medicine.medical_specialty
Asia
Internationality
Coronavirus disease 2019 (COVID-19)
Epidemiology
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)
Physical Distancing
Public Policy
Genome, Viral
epidemic
law.invention
03 medical and health sciences
0302 clinical medicine
law
Quarantine
medicine
Humans
genome
Phylogeny
Travel
Original Paper
SARS-CoV-2
Public health
intercontinental transmission
Australia
COVID-19
Outbreak
Genomics
South America
Europe
030104 developmental biology
Infectious Diseases
Transmission (mechanics)
Geography
Africa
Communicable Disease Control
North America
030217 neurology & neurosurgery
Demography
Demographic expansion
Subjects
Details
- ISSN :
- 14694409 and 09502688
- Volume :
- 149
- Database :
- OpenAIRE
- Journal :
- Epidemiology and Infection
- Accession number :
- edsair.doi.dedup.....c7886a95eddffae91becd346222d6126