학술논문

Genomic and epidemiological monitoring of yellow fever virus transmission potential
Document Type
article
Source
Science. 361(6405)
Subject
Prevention
Genetics
Emerging Infectious Diseases
Rare Diseases
Infectious Diseases
Vaccine Related
Biodefense
Aetiology
2.2 Factors relating to the physical environment
Infection
Aedes
Age Factors
Animals
Brazil
Disease Outbreaks
Epidemiological Monitoring
Evolution
Molecular
Genomics
Humans
Phylogeny
Polymerase Chain Reaction
Risk
Sex Factors
Spatio-Temporal Analysis
Yellow Fever
Yellow fever virus
General Science & Technology
Language
Abstract
The yellow fever virus (YFV) epidemic in Brazil is the largest in decades. The recent discovery of YFV in Brazilian Aedes species mosquitos highlights a need to monitor the risk of reestablishment of urban YFV transmission in the Americas. We use a suite of epidemiological, spatial, and genomic approaches to characterize YFV transmission. We show that the age and sex distribution of human cases is characteristic of sylvatic transmission. Analysis of YFV cases combined with genomes generated locally reveals an early phase of sylvatic YFV transmission and spatial expansion toward previously YFV-free areas, followed by a rise in viral spillover to humans in late 2016. Our results establish a framework for monitoring YFV transmission in real time that will contribute to a global strategy to eliminate future YFV epidemics.