ArticlePloS one2022
Multiple chikungunya virus introductions in Lao PDR from 2014 to 2020.
Article in PloS one, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed, 5 citations in OpenAlex.
- Genomic surveillance reveals multiple origins and local transmission of travel-associated chikungunya virus in Yunnan, China.BMC microbiology · 2026Article
- The First Imported Case of Chikungunya Virus Infection - Anhui Province, China, 2025.China CDC weekly · 2025Article
- Increased interregional virus exchange and nucleotide diversity outline the expansion of chikungunya virus in Brazil.Nature communications · 2023Article
- Increased interregional virus exchange and nucleotide diversity outline the expansion of the chikungunya virus ECSA lineage in Brazil.medRxiv : the preprint server for health sciences · 2023Article
- Emerging and re-emerging zoonotic viral diseases in Southeast Asia: One Health challenge.Frontiers in public health · 2023Review
- Low Transmission of Chikungunya Virus by Aedes aegypti from Vientiane Capital, Lao PDRPathogens (Basel, Switzerland) · 2022Article
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Authors and funding
9 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The first documented chikungunya virus (CHIKV) outbreak in Lao People's Democratic Republic (Lao PDR) occurred in 2012-2013. Since then, several imported and a few autochthonous cases were identified by the national arbovirus surveillance network. The present study aimed to summarize the main genetic features of the CHIKV strains detected in Lao PDR between 2014 and 2020. Samples from Lao patients presenting symptoms compatible with a CHIKV infection were centralized in Vientiane Capital city for real-time RT-PCR screening. Molecular epidemiology was performed by sequencing the E2-6K-E1 region. From 2014 to 2020, two Asian lineage isolates (e.g. French Polynesia; Indonesia), one ECSA-IOL lineage isolate (e.g. Thailand) and one unclassified (e.g. Myanmar) were imported in Vientiane Capital city. Sequences from the autochthonous cases recorded in the Central and Southern parts of the country between July and September 2020 belonged to the ECSA-IOL lineage and clustered with CHIKV strains recently detected in neighboring countries. These results demonstrate the multiple CHIKV introductions in Lao PDR since 2014 and provide evidence for sporadic and time-limited circulation of CHIKV in the country. Even if the circulation of CHIKV seems to be geographically and temporally limited in Lao PDR, the development of international tourism and trade may cause future outbreaks of CHIKV in the country and at the regional level.
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