MANILA, July 10 — The story of how humanity learned to fight disease is a long one, and for families across Asia, its most recent chapters are bringing new hope. From the first vaccine developed more than two centuries ago to the sophisticated cell therapies approved just a few years back, the history of immunology is a narrative of steady, often life-saving progress. It all began with observation.
Edward Jenner developed the first smallpox vaccine in 1796, using material from cowpox to protect against a far deadlier scourge. That single act laid the groundwork for one of the greatest public health victories in history: the World Health Organization declared smallpox eradicated in 1980.
For communities across the region, where infectious diseases remain a daily challenge, that eradication stands as a powerful reminder of what science can achieve.
From Germs to Antibodies
In the 1880s, Louis Pasteur built on this foundation, creating vaccines for rabies and anthrax and firmly establishing the germ theory of disease. This was a pivotal shift — the idea that invisible microbes caused illness, and that the body could be trained to fight them. Then, at the turn of the century, Paul Ehrlich proposed the side-chain theory of antibody formation in 1900, work that earned him the Nobel Prize in Physiology or Medicine in 1908.
His insights helped explain how the immune system produces specific defenders against specific invaders. The mid-20th century brought another leap.
In the 1950s, Frank Macfarlane Burnet and Peter Medawar developed the theory of clonal selection. This explained how the adaptive immune system recognizes and remembers antigens — a fundamental concept that underpins how vaccines work. A few decades later, the discovery of the precise structure of antibodies by Gerald Edelman and Rodney Porter, which won them the Nobel Prize in 1972, gave scientists a molecular blueprint to work from.
For families in the Philippines and across Southeast Asia, where access to advanced care can be uneven, these discoveries eventually translated into practical tools. The first successful bone marrow transplant took place in 1968, opening a new front against blood cancers.
And in 1984, César Milstein, Georges Köhler, and Niels Jerne won the Nobel Prize for their development of monoclonal antibodies — lab-made molecules that can target specific cells with remarkable precision.
The Modern Era of Immunotherapy
The 1980s brought a stark new challenge with the identification of HIV/AIDS, which spurred intense research into immune deficiencies. That crisis accelerated understanding of how the immune system can fail — and how it might be bolstered. The 21st century has seen the payoff of decades of work in the form of immunotherapy.
One major breakthrough came with checkpoint inhibitors. The FDA approved ipilimumab in 2011 for the treatment of melanoma, a deadly form of skin cancer.
These drugs work by releasing the “brakes” on the immune system, allowing the body’s own T-cells to attack tumors more effectively. For patients in Asia, where melanoma rates are lower than in the West but still significant, this represented a new option where few had existed before. Even more targeted is CAR-T cell therapy, first approved in 2017 for certain types of leukemia.
This approach involves removing a patient’s own immune cells, genetically engineering them to recognize cancer, and infusing them back into the body. It is a personalized treatment that has produced dramatic results in some patients who had run out of other options.
Closer to home, hospitals in Singapore, Japan, and South Korea have been among the early adopters of these therapies, offering new hope to families facing a cancer diagnosis. The journey from Jenner’s cowpox experiment to today’s gene-edited immune cells has been long, but each step has brought us closer to mastering the body’s own defenses. As research continues, the next milestones — perhaps in solid tumors or autoimmune diseases — may be just around the corner. Consult your doctor for medical advice.
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