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The 1907 Nobel Prize in Physiology or Medicine was awarded to Charles Laveran, a French military physician. Laveran was the first to demonstrate that the cause of malaria was not “bad air” (mal aria), but a protozoan parasite living in the blood. This is the story of how, with just one microscope in a military hospital in colonial Algeria, he overturned a millennia-old superstition.

Malaria — The Name Itself Was a Misdirection

Malaria. The word comes from the Italian “mala aria” — bad air. For thousands of years, humanity believed that the miasma of swamps caused the fever. Aristotle thought so, and so did European doctors in the 19th century. The very name of the disease contained the wrong cause.

In computer science terms, this is like having a bug in the variable name. If a variable named bad_air_disease is used throughout the codebase, all developers will assume that the disease is caused by air and write their logic accordingly. What Laveran did was reveal that the true nature of the variable was actually blood_parasite_disease. Changing the variable name is easy, but changing the entire way of thinking that is based on that name takes decades.

A Glimpse of the Times — Colonies Becoming Laboratories

1907 was the height of European imperialism. Great Britain controlled much of India and the African continent, France controlled North Africa and Indochina, and Germany controlled East Africa and the Pacific islands. Korea had lost its diplomatic rights after the Eulsa Treaty (1905), and in 1907, the Hague Secret Emissary Incident occurred, leading to the forced abdication of Emperor Gojong.

Laveran’s research cannot be separated from this imperialism. The fact that France stationed troops in Algeria was the direct reason why Laveran was able to study malaria there. Tropical diseases were not pure science but a military necessity because more soldiers stationed in the tropics died from malaria than from battle. The fact that Britain awarded Ross the Nobel Prize in 1902, and that France supported Laveran’s research, was ultimately about the survival rate of colonial armies.

In the history of science, “who paid for the research” is always important. Laveran’s discovery is great, but it is important to remember the structural conditions that made the discovery possible — the colonial military hospital.

A Microscope in an Algerian Military Hospital

Charles Louis Alphonse Laveran (1845-1922) came from a family of French military doctors. His father was also a military doctor, and he graduated from the Faculty of Medicine in Strasbourg and then served in the French army. In 1878, Laveran was assigned to a military hospital in Constantine, French Algeria.

Here, Laveran saw malaria patients every day. And on November 6, 1880, while observing the blood of a malaria patient under a microscope, he discovered something moving inside the red blood cells. Transparent vesicles, with amoeba-like creatures wriggling inside. Laveran was convinced that this was the cause of malaria.

However, the academic community did not accept it. At the time, the mainstream of bacteriology was the bacteria paradigm of Koch and Pasteur. The cause of the disease had to be bacteria. What Laveran claimed was not bacteria, but protozoa — much larger and more complex single-celled organisms. This did not fit the existing framework.

In computer science terms, this is like everyone on the security team analyzing logs with the framework that “attacks are SQL injections,” while Laveran alone claims that “this is not an injection but a parasitic process. It’s a completely different type of malware that penetrates the host’s memory (red blood cells) directly and consumes resources internally.”

The Life Cycle of a Parasite — Malware Traversing Operating Systems

After Laveran’s discovery, the life cycle of the malaria parasite (Plasmodium) was gradually elucidated. This is an incredibly sophisticated survival strategy.

When a mosquito bites a person, the malaria parasite enters the bloodstream. The parasite first hides and multiplies in liver cells, and then enters the bloodstream and invades red blood cells. Inside the red blood cells, it absorbs nutrients, divides, and multiplies, then bursts the red blood cells and infects new red blood cells. Every time this happens, the patient experiences a high fever. The periodic fever of malaria, with a 48-hour cycle for tertian fever and a 72-hour cycle for quartan fever, exactly matches the cycle of red blood cell rupture.

In computer science terms, this is cross-platform malware. It traverses operating systems from mosquito (OS-A) to human (OS-B), hides and multiplies in the liver (staging server), and then deploys to the bloodstream (production server). It penetrates the red blood cells (containers), consumes resources, and destroys the containers, infecting new containers in a cycle. It repeats with the precision of a cron job every 48-72 hours. However, this analogy breaks down here. Software malware can be replicated perfectly, but biological parasites mutate over generations, making vaccine development difficult. The malaria vaccine (RTS,S) was only approved by the WHO in 2021.

A War That Still Isn’t Over

More than 140 years have passed since Laveran discovered the malaria parasite in 1880, but malaria still claims more than 600,000 lives every year. Most of these are children under the age of five in Africa.

In Korea, malaria is not a distant story. It was a serious endemic disease until the 1950s and 60s, and tertian malaria still occurs near the Demilitarized Zone. The commemorative stamp for the eradication of malaria in Korea (1962), mentioned in the OCR source, is a remnant of that era.

The military doctor who first saw the parasite in red blood cells in front of a microscope in an Algerian military hospital. His discovery shattered thousands of years of misunderstanding about “bad air,” but humanity is still struggling to defeat the parasite itself.

Malaria Parasite Infection Cycle: Parasites transmitted from mosquitoes to humans hide and multiply in the liver, and then invade red blood cells, consuming and destroying them. The cycle of red blood cell rupture (48-72 hours) matches the fever cycle.