Alexandre Yersin -

If you are visiting Nha Trang, several landmarks honor "Ông Năm," as he was affectionately called by locals.

: Working at the Pasteur Institute in Paris , he co-discovered the toxins for Diphtheria and Tetanus alongside Émile Roux. alexandre yersin

: To combat malaria, he successfully acclimatized the Peruvian cinchona tree in Vietnam to produce quinine. Sites to Visit in Nha Trang If you are visiting Nha Trang, several landmarks

Alexandre Yersin (1863–1943) was a Swiss-French physician and bacteriologist best known for co-discovering the bacillus responsible for the bubonic plague, later named Yersinia pestis in his honor. While his scientific contributions saved millions globally, his legacy is most deeply felt in Vietnam, where he lived for decades and is venerated as a national hero and humanitarian. Scientific Breakthroughs Sites to Visit in Nha Trang Alexandre Yersin

Yersin was an avid explorer who mapped the central highlands of Vietnam and recommended the site for the hill station that became the city of Da Lat . His agricultural contributions were equally transformative:

: He introduced the Brazilian rubber tree ( Hevea brasiliensis ) to Indochina, founding a multi-billion dollar industry.

: During an 1894 outbreak in Hong Kong, Yersin isolated the bacterium causing the plague and demonstrated its presence in both rodents and humans, identifying the primary means of transmission.