human diseases caused by bacteria
While a majority of bacteria in the human body are countered by the immune system, there are a few that are pathogenic in nature. Pathogenic bacteria cause infectious diseases like leprosy, cholera, anthrax, and bubonic plague.They are also responsible for the spread of respiratory infections like tuberculosis.he bacterium legionella causes Legionnaires' disease, a lung infection which is a severe form of pneumonia. The disease spreads by inhaling the bacteria or through contact with a person suffering from the disease. Legionella also cause a flu-like illness called Pontiac fever.