Published in April 2024, originally authored by Doug Johnson in the Khmer Times
Adapted for The Better Cambodia
In Cambodia’s long battle against malaria, one man’s lifelong dedication has left an indelible mark—Yeang Chheang. For more than seventy years, he worked tirelessly behind the scenes, driven not by accolades but by a deep commitment to saving lives. Now, as the country edges closer to eradicating malaria, his extraordinary contributions are emerging from the shadows, offering a powerful reminder of how quiet determination can shape a nation’s health legacy.
In December 2023, the then 86-year-old was honored with the “Unsung Hero” award at the United Nations Climate Change Conference (COP28) in Dubai, finally earning global recognition for his lifelong sacrifices and contributions. His story is a profound reminder of the resilience, compassion, and determination that helped shape Cambodia’s health system in its darkest and most hopeful moments.
A Lifelong Commitment to Vector Control
Yeang Chheang’s journey began in 1954 at the age of 17, when he started training as Cambodia’s first medical entomologist. Born in Kampong Thom province, his fascination with insects—especially mosquitoes—soon turned into a lifelong mission. With support from a French mentor at the Institut de Biologie, Chheang studied vector control and developed a deep understanding of how mosquitoes transmitted deadly diseases like malaria.
His expertise grew rapidly, and by the early 1960s, under the rule of Prince Norodom Sihanouk, he had studied in the Philippines and returned home to become a young entomologist with the Ministry of Health. In Kratie province, he helped initiate Cambodia’s first malaria eradication pilot project, playing a crucial role in early vector control efforts.
Courage Amidst Catastrophe
When the Khmer Rouge seized power in 1975, Chheang—like millions of Cambodians—endured unthinkable tragedy. He lost his mother, three brothers, sister, wife, and infant son to starvation and genocide. Yet, amidst the terror, he found ways to save others. Secretly carrying antimalarial pills in his pockets, Chheang treated sick prisoners in labour camps, including Khmer Rouge soldiers.
One incident that defined his courage occurred when a senior military commander fell ill. Chheang was summoned, terrified he might be killed if anything went wrong. But the treatment worked. He earned the trust of both captors and inmates and was given permission to move freely, treating anyone suffering from malaria.
“I survived the Khmer Rouge because of those malaria tablets,” he once said. “They were my blessing.”
Rebuilding a Broken System
After the fall of the Khmer Rouge in 1979, Chheang was one of only five malaria experts who returned to Phnom Penh to rebuild the devastated national malaria control programme. With no staff or resources, he began from ground zero, securing aid from the World Health Organization and UNICEF to provide equipment and medicines.
One of his earliest accomplishments was training 68 people from 24 provinces in microscopy and malaria treatment—laying the foundation for a new generation of malaria workers.
He later married Nong Bunny, his late wife’s younger sister and a lab technician in the same programme. Together, they helped rebuild not just their family, but the health system of a nation.
A Relentless Field Worker
Chheang’s commitment didn’t end in the capital. In the years that followed, he continued working in remote and dangerous areas such as Pailin province, a former Khmer Rouge stronghold and hotspot for drug-resistant malaria. Leading USAID-supported projects like the Malaria Control in Cambodia (MCC) initiative, he often trekked on foot through mine-laden forests to deliver mosquito nets, collect samples, and train local health workers.
He treated everyone equally—former Khmer Rouge fighters and civilians alike—with dignity and care. “If we don’t help people with malaria, we cease to be humans,” he once said.
A Quiet Retirement, A Lasting Legacy
Chheang retired in 2016, but his legacy endures through the work of the National Center for Parasitology, Entomology and Malaria Control. His efforts—often invisible to the wider public—have been instrumental in helping Cambodia record zero malaria deaths for more than six years and reduce infection rates to historic lows.
As Dr. David Walton, the U.S. Global Malaria Coordinator at USAID, wrote in a letter to Chheang, “To do so through the terror and suffering of the Khmer Rouge regime and to rebuild in its wake is truly heroic… Your success is an inspiration to me, my colleagues at the US President’s Malaria Initiative, and all of the malaria community.”
A National Inspiration
Today, Cambodia stands closer than ever to completely eliminating malaria—a goal that once seemed unachievable. This milestone is the result of collective effort, with support from the Royal Government, international partners like USAID, the Centers for Disease Control and Prevention, and the Global Fund. But the foundation was laid by pioneers like Yeang Chheang.
Though not widely known among the general public, his work has touched the lives of millions. He is a symbol of Cambodia’s spirit—resilient, humble, and fiercely committed to a better future.
As of the publication of the original article in April 2024 by Doug Johnson in Khmer Times, Yeang Chheang was living a quiet retirement in Phnom Penh. Whether or not he is still with us today, his legacy remains firmly alive in the bloodstreams of those he protected, the professionals he mentored, and the future generations who will grow up in a Cambodia free from the shadow of malaria.
To the unsung hero, Yeang Chheang—thank you.
