BREAKING NEWS
For the latest on Thailand Medical Industry, Thailand Doctors, Thailand Medical Research, Thailand Hospitals, Thailand Wellness Initiatives and the latest Medical News
Share
Tweet
Share
Medical News: Hidden Viral Diversity Behind Measles Surge
A new scientific investigation has uncovered critical insights into the recent rise of measles cases in Burundi, revealing that the outbreak is far more complex than previously believed. Despite years of vaccination efforts, measles has resurged since 2019, prompting deeper investigation. Researchers analyzing virus samples from northern districts—including Muyinga, Gashoho, Kiremba, and Buye—found that the infections were not caused by a single chain of transmission. Instead, multiple virus introductions are fueling the spread.
Genetic study reveals multiple hidden sources behind Burundi’s measles outbreak
International Team Behind the Research
The study covered in this Medical News report was conducted by a collaboration of scientists from leading institutions, including the National Reference Laboratory of the National Public Health Institute in Burundi, Erasmus University Medical Center in the Netherlands, Hassan II University of Casablanca in Morocco, Addis Ababa University in Ethiopia, the World Health Organization office in Burundi, the National Institute for Public Health and the Environment (RIVM) in the Netherlands, the Technical University of Denmark, Mohammed VI University of Sciences and Health in Morocco, and the University of Burundi. This wide-ranging collaboration underscores the global importance of tracking infectious diseases.
Advanced Genetic Analysis Provides Answers
To better understand the outbreak, scientists used whole-genome sequencing, a cutting-edge method that examines the entire genetic makeup of the virus. This approach provides far more detailed information than traditional methods that only study small portions of the virus. The research team analyzed 18 virus samples collected between February and June 2024, most of which came from young children. Alarmingly, over 70 percent of the cases were in children under five years old, many of whom were unvaccinated or had uncertain vaccination histories.
Study Reveals Key Findings
The genetic findings showed that all virus samples belonged to a known measles type called genotype B3, one of the strains currently circulating worldwide. However, the viruses were divided into two distinct clusters. One smaller cluster showed close links to strains previously detected in Italy, while the larger cluster was connected to viruses circulating within Africa, particularly in the Great Lakes region. The analysis also revealed that the dominant cluster had likely been circulating in Burundi since early 2023, long before the outbreak was officially recognized in 2024. This indicates that the virus had been spreading silently for months without detection.
Evidence of Cross-Border Transmission
The study also highlighted the role of international movement in spreading measles. One related virus sample identified in the Netherlands appeared to be linked to travel within Africa, suggesting that cross-border transmission plays a significant role in outbreaks. Howeve
r, researchers emphasized that limited genomic data from many African countries makes it difficult to fully trace the virus’s origins and movement. This lack of data leaves important gaps in understanding how measles spreads across regions.
Children Remain Most at Risk
The findings confirm that young children are the most vulnerable to measles infection. Many of the affected children had not yet completed their vaccination schedules, while others received vaccines too close to the onset of symptoms for protection to develop. In some cases, vaccination occurred only days before illness, which is insufficient time for immunity to build. These patterns highlight the importance of timely vaccination and ensuring full immunization coverage.
Implications for Public Health Strategy
The study demonstrates the limitations of traditional surveillance methods in detecting complex transmission patterns. Whole-genome sequencing provides a more accurate picture of how viruses spread, enabling health authorities to respond more effectively. The findings also stress the need for stronger disease monitoring systems, particularly in regions with high population movement, such as areas hosting refugees. Improved surveillance and faster detection could prevent future outbreaks from spreading unnoticed.
Conclusion
This study provides important new evidence that measles outbreaks in Burundi are driven by multiple introductions of the virus rather than a single continuous chain of transmission. It also reveals that the virus had been circulating undetected well before the outbreak became apparent, highlighting gaps in current surveillance systems. The findings emphasize the urgent need to expand genomic monitoring, improve vaccination coverage, and strengthen cross-border health coordination. Without these measures, measles outbreaks may continue to emerge and spread silently, placing vulnerable populations—especially young children—at ongoing risk and undermining progress toward disease elimination.
The study findings were published in the peer reviewed journal: PLOS One.
https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0351691
For the latest on measles, keep on logging to Thailand Medical News.
Read Also:
https://www.thailandmedical.news/articles/measles
