At the end of the 19th century, The French biologist Alexandre Yersin discovered the germ Yersina pestis. Yersina pestis spread the "Black Death". With the help of modern microbiologist's study with a namatode (C. elegans), genes that may play a part in the transmission of plague have been identified. Along with this knowledge, the microbiologists understood that the bacillus travelled from person to person through the air and from bites from infected fleas and rats. According to biologist Paul-Louis Simond, the bacteria blocks the digestive tracts of the fleas and stimulates them to bite and people repeatedly, injecting and spreading the bacteria. The bacteria hitchhike in immune cells in lymph nodes and the infection begins and transmits to others. Antibiotics are then chosen to fight the bacteria.
Answer: Plato Answer
Explanation:
Microbiologist identified the bacteria that cause the disease, and they also played a role in discovering how it evolved. After analyzing bacteria from samples of people who died from the disease, microbiologist determined that the bacteria had key genetic mutations that made it so deadly to humans. Bubonic plague still occurs around the globe, including in some areas of the Unites States. Microbiologists helped develop the antibiotics now used to treat it.
