Anti-cholera Vaccine
At the time, one of the five great cholera pandemics of the 19th century ravaged Asia and Europe. Even though Robert Koch discovered Vibrio cholerae in 1883, the medical science at that time did not consider it a sole cause of the disease. This view was supported by experiments by several biologists, notably Jaume Ferran i Clua in Spain.
Haffkine focused his research on developing cholera vaccine and produced an attenuated form of the bacterium. Risking his own life, on July 18, 1892, Haffkine performed the first human test on himself and reported his findings on July 30 to the Biological Society. Even though his discovery caused an enthusiastic stir in the press, it was not widely accepted by his senior colleagues, including both Mechnikov and Pasteur, nor by European official medical establishment in France, Germany and Russia.
The scientist decided to move to India where hundreds of thousands died from ongoing epidemics. At first, he was met with deep suspicion and survived an assassination attempt by Islamic extremists during the first year there (1893), but he managed to vaccinate about 25,000 volunteers, most of whom survived. After contracting malaria, Haffkine had to return to France.
In his August 1895 report to Royal College of Physicians in London about the results of his Indian expedition, Haffkine dedicated his successes to Pasteur, who recently had died. In March 1896, against his doctor's advice, Haffkine returned to India and performed 30,000 vaccinations in seven months.
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