Zika virus from a Southeast Asian perspective

Area of Science:

• Virology
• Epidemiology
• Public Health

Background:

• The Zika virus strain causing the unprecedented outbreak in the Americas has phylogenetic links to Southeast Asia.
• Isolated cases of Zika virus infection have been reported in Southeast Asia since 2010.
• The reasons for the absence of large-scale Zika outbreaks in Southeast Asia are currently unknown.

Purpose of the Study:

• To examine the Zika virus from a Southeast Asian perspective.
• To explore potential future scenarios for Zika virus in this region.
• To identify critical research questions requiring urgent attention.

Main Methods:

• Phylogenetic analysis of Zika virus strains.
• Review of existing literature on Zika virus in Southeast Asia.
• Epidemiological data review.

Main Results:

• Phylogenetic evidence points to Southeast Asia as the origin of the current Americas strain.
• The lack of significant outbreaks in Southeast Asia despite the virus's presence is a key observation.
• Several plausible scenarios for future Zika virus activity in the region are considered.

Conclusions:

• Understanding the factors preventing large outbreaks in Southeast Asia is crucial.
• Further research is urgently needed to address the potential for future Zika virus epidemics in the region.
• A proactive approach to Zika virus surveillance and research in Southeast Asia is recommended.