Host-adaptive mutations in Chikungunya virus genome.

Area of Science:

• Virology
• Epidemiology
• Evolutionary Biology

Background:

• Chikungunya virus (CHIKV) causes chikungunya fever (CHIKF), a significant global public health concern.
• Primary vectors are Aedes aegypti and Aedes albopopictus mosquitoes; the virus has spread from Africa worldwide.
• The World Health Organization identifies CHIKV as a serious public health threat.

Purpose of the Study:

• To review host-adapted gene mutations in CHIKV.
• To understand the adaptive evolution of CHIKV under natural and laboratory conditions.
• To provide a basis for monitoring and early warning of CHIKF outbreaks.

Main Methods:

• Review of existing scientific literature on CHIKV gene mutations.
• Analysis of studies detailing CHIKV evolution under natural and laboratory transmission.
• Synthesis of research on viral fitness and host adaptation.

Main Results:

• Specific CHIKV gene mutations enhance viral fitness and contribute to global epidemic expansion.
• Host adaptation through mutation is a key factor in CHIKV's increased prevalence.
• Understanding these mutations aids in predicting viral behavior.

Conclusions:

• Host-adapted gene mutations are critical drivers of CHIKV's global spread and impact.
• Further research into CHIKV adaptive evolution is essential for public health.
• This review provides insights for improved surveillance and outbreak prediction of CHIKF.