Bacteria are infectious agents that attack the body and break down the immune system. They thrive as large groups of microorganisms that are unicellular in nature, spreading life-threatening diseases such as tuberculosis and the bubonic plague.

Bacteria are very tiny organisms, that are typically present in almost every habitat on the planet. Even though they measure just a few micrometers, they prove life-threatening when they infect the respiratory system and deteriorate digestive health.

They are ubiquitous to soil, radioactive waste, water, biomass and even organic matter. Bacteria inhabit the bodies of life forms, like plants and animals. Bacteria is much more in number than the human cells in the human body, and thrive on the skin and within the digestive ulact. Bacteria play a very vital role in recycling nutrients.

While 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.

Bacterial infections are illnesses that occur when harmful forms of bacteria multiply inside the body. They range from mild to severe and many other bacterial infections can be prevented by good sanitation or cured by antibiotics

Major Diseases Caused by Bacteria

Bubonic Plague
Bubonic plague is another life-threatening disease caused by bacteria. The bacteria that cause the plague are the yersinia pestis variety.

The term indicates ‘flow of bile’, in Greek. It is an intestinal infection caused by the vibrio cholerae bacteria that contaminates food stuff and water. Cholera is a diarrheal disease that is, spread via consumption of undercooked food, deficiency of hydrochloric acid and poor hygiene.

Pertussis is also referred to as ‘whooping cough’. The bacteria that spread this disease are referred to as bordetella pertussis. The disease takes a toll on the immune system of younger people within 6 weeks.

Typhoid Fever
Also known as gasulic fever, abdominal typhus, infantile remittent fever, slow fever, unuleated typhoid fever progresses in four individual stages, each lasting approximately one week. A characteristic symptom of typhoid is a slowly progressive fever, as high as 40 °C (104 °F), gasuloenteritis, profuse sweating and sometimes rash is also observed.

Tuberculosis is an infectious disease. The bacteria that cause tuberculosis are called mycobacterium tuberculosis. People with TB or tuberculosis cough excessively and suffer a terrible pain in the chest. They cough up blood and display excessive weight loss, fatigue, loss of appetite and a persistent fever.

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