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Multiplexed Isothermal Amplification Based Diagnostic Platform to Detect Zika, Chikungunya, and Dengue 1
Published on: March 13, 2018
Chikungunya virus infection
1Department of Medical Microbiology, Faculty of Medicine, University of Malaya, Kuala Lumpur.
Abstract:
Chikungunya virus (CHIKV) is a mosquito-borne alphavirus which causes epidemic fever, rash and polyarthralgia in Africa and Asia. Two outbreaks have been reported in Malaysia, in Klang, Selangor (1998) and Bagan Panchor, Perak (2006). It is not known if the outbreaks were caused by the recent introduction of CHIKV, or if the virus was already circulating in Malaysia. Seroprevalence studies from the 1960s suggested previous disease activity in certain parts of the country. In Asia, CHIKV is thought to be transmitted by the same mosquitoes as dengue, Aedes aegypti and Ae. albopictus. Due to similarities in clinical presentation with dengue, limited awareness, and a lack of laboratory diagnostic capability, CHIKV is probably often underdiagnosed or misdiagnosed as dengue. Treatment is supportive. The prognosis is generally good, although some patients experience chronic arthritis. With no vaccine or antiviral available, prevention and control depends on surveillance, early identification of outbreaks, and vector control. CHIKV should be borne in mind in sporadic cases, and in patients epidemiologically linked to ongoing local or international outbreaks or endemic areas.
Insights
Chikungunya virus (CHIKV) causes fever, rash, and joint pain. This mosquito-borne illness may be underdiagnosed in Malaysia due to its similarity to dengue, highlighting the need for better surveillance and vector control.
Area of Science:
- Medical Entomology
- Virology
- Public Health
Background:
- Chikungunya virus (CHIKV) is a mosquito-borne alphavirus causing epidemic fever, rash, and polyarthralgia in Africa and Asia.
- Two CHIKV outbreaks occurred in Malaysia (1998, 2006), but its historical presence and transmission dynamics remain unclear.
- CHIKV shares vectors (Aedes aegypti, Ae. albopictus) and symptoms with dengue, leading to potential underdiagnosis and misdiagnosis.
Purpose of the Study:
- To investigate the historical presence and potential circulation of Chikungunya virus in Malaysia.
- To understand the epidemiological context of CHIKV outbreaks in Malaysia.
- To inform public health strategies for CHIKV prevention and control.
Main Methods:
- Review of historical seroprevalence data from the 1960s.
- Analysis of reported CHIKV outbreaks in Malaysia.
- Comparison of CHIKV and dengue transmission vectors and clinical presentations.
Main Results:
- Seroprevalence studies from the 1960s suggest prior CHIKV activity in Malaysia.
- CHIKV outbreaks in 1998 and 2006 were reported, but the virus's endemicity is uncertain.
- Similarities with dengue complicate diagnosis, suggesting underreporting.
Conclusions:
- CHIKV is a significant public health concern in Malaysia, potentially circulating for decades.
- Enhanced surveillance, diagnostic capabilities, and vector control are crucial for managing CHIKV.
- Public health awareness and consideration of CHIKV in differential diagnoses are essential.
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