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Viral Recombination

Viral Recombination

Cells are sometimes infected by more than one virus at once. When two viruses disassemble to expose their genomes for replication in the same cell, similar regions of their genomes can pair together and exchange sequences in a process called recombination. Alternatively, viruses with segmented genomes can swap segments in a process called reassortment.

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Multiplexed Isothermal Amplification Based Diagnostic Platform to Detect Zika, Chikungunya, and Dengue 1

Multiplexed Isothermal Amplification Based Diagnostic Platform to Detect Zika, Chikungunya, and Dengue 1

Published on: March 13, 2018

Explosive chikungunya virus outbreak in China.

Kok Keng Tee¹, Dongkui Mu¹, Xueshan Xia¹

¹Yunnan Province Key Laboratory of Public Health and Biosafety, School of Public Health, Kunming Medical University, Yunnan, China.

International Journal of Infectious Diseases : IJID : Official Publication of the International Society for Infectious Diseases

|September 28, 2025

Summary

The 2025 Guangdong chikungunya virus (CHIKV) outbreak, China's largest, highlights the impact of mobility and ecological factors. Enhanced surveillance and regional cooperation are crucial for future arbovirus threat mitigation.

Keywords:

Chikungunya fever China Disease outbreaks Mosquito vectors Vaccines, viral

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Evaluation of Zika Virus-specific T-cell Responses in Immunoprivileged Organs of Infected Ifnar1-/- Mice

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Published on: October 17, 2018

Area of Science:

Arbovirology
Epidemiology
Public Health

Background:

Chikungunya virus (CHIKV), an Aedes-borne alphavirus, poses a growing global health risk.
China has historically experienced limited chikungunya outbreaks, primarily linked to imported cases.

Purpose of the Study:

To analyze the epidemiology, clinical features, and public health response of the 2025 Guangdong chikungunya outbreak.
To understand the factors contributing to the unprecedented scale of this epidemic in China.

Main Methods:

Analysis of epidemiological, clinical, and public health data from the 2025 Guangdong outbreak.
Monitoring of case numbers, clinical presentations, and geographical spread.
Evaluation of public health interventions including PCR testing, isolation, and vector control.

Main Results:

The outbreak, originating in Foshan, resulted in over 10,000 confirmed cases by late August 2025.
Clinical manifestations were typical of chikungunya fever; no severe complications or fatalities were reported.
The virus spread locally and regionally, with travel-associated cases identified in Macao, Hong Kong, Taiwan, and Guangxi.

Conclusions:

The large-scale Guangdong CHIKV epidemic underscores the influence of ecological and mobility factors in epidemic emergence.
Strengthened surveillance, genomic analysis, regional data sharing, and vaccine preparedness are essential for future arbovirus threat management in China.