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. 2020 Feb;26(2):307-310.
doi: 10.3201/eid2602.171636.

Emergence of Chikungunya Virus, Pakistan, 2016-2017

Emergence of Chikungunya Virus, Pakistan, 2016-2017

Nazish Badar et al. Emerg Infect Dis. 2020 Feb.

Abstract

During December 2016-May 2017, an outbreak of chikungunya virus infection occurred across Pakistan. The East/Central/South African genotype was predominant. This study provides baseline data on the virus strain and emphasizes the need for active surveillance and implementation of preventive interventions to contain future outbreaks.

Keywords: CHIKV; Chikungunya virus; Pakistan; arboviruses; molecular epidemiology; vector-borne infections; viruses; zoonoses.

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Figures

Figure 1
Figure 1
Geographic distribution of chikungunya-positive cases in Pakistan, December 20, 2016–May 31, 2017. AJK, Azad Jammu and Kashmir; FATA, Federally Administered Tribal Areas.
Figure 2
Figure 2
Phylogenetic tree of chikungunya viruses collected from patients in Pakistan, December 20, 2016–May 31, 2017 (red squares), and reference viruses. The tree was generated by the maximum-likelihood method based on the nucleotide sequence of the partial envelope 1 (A) and nonstructural protein 1 (B) genes. Red text indicates East/Central/South African genotype; yellow text indicates Asian genotype; green text indicates South African genotype; blue text indicates West African genotype; and purple text indicates o’nyong-nyong virus ancestral strain. GenBank accession numbers are provided for reference viruses. Scale bars indicate nucleotide substitutions per site.

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