Beijing: Chinese researchers have identified a significant mutation in the Ebola virus that greatly increased its infectivity during a major outbreak. This discovery holds critical importance for epidemic monitoring and drug development.
The study was published in the prestigious scientific journal Cell. The research focused on the Ebola virus disease (EVD) outbreak in the Democratic Republic of Congo (DRC) from 2018 to 2020, which was the second-largest Ebola outbreak recorded. Over 3,000 people were infected during this period, with more than 2,000 fatalities.
Professor Qian Jun from Sun Yat-sen University stated, “This research highlights the essential role of real-time genomic surveillance and evolutionary analysis of viruses during any major infectious disease outbreak. It enables timely warnings about increasing transmission risks and helps evaluate the effectiveness of existing drugs and vaccines, allowing for proactive adjustments in control strategies.”
The primary question addressed by the study was whether the prolonged Ebola outbreak was influenced not only by weaknesses in local healthcare systems but also by the virus’s own evolutionary changes.
Professor Qian Jun explained, “We know that certain virus mutations become invisible yet powerful factors in accelerating transmission during large outbreaks. After over a decade of working on Ebola, it was crucial to determine if such patterns exist in this virus as well.”
In 2022, the research team analysed 480 complete Ebola virus genomes. They discovered a particular mutation in the viral glycoprotein, named GP-V75A, which emerged early in the DRC outbreak. This variant rapidly replaced the original strain, correlating with a sharp rise in Ebola cases, indicating increased viral infectivity.
Subsequent experiments confirmed that the GP-V75A mutation significantly enhanced the virus’s ability to infect various cell types and mice models.
The study also revealed a concerning aspect: the GP-V75A mutation reduced the effectiveness of some existing antiviral antibodies and small-molecule drugs, raising the risk of drug resistance.
The researchers emphasised that these findings underline the critical need for continuous genomic monitoring of viruses during outbreaks to identify emerging evolutionary threats promptly and to develop effective treatment strategies with broad impact.
My name is Bhupendra Singh Chundawat. I am an experienced content writer with several years of expertise in the field. Currently, I contribute to Daily Kiran, creating engaging and informative content across a variety of categories including technology, health, travel, education, and automobiles. My goal is to deliver accurate, insightful, and captivating information through my words to help readers stay informed and empowered.
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