There are not a lot of people in the world who are not aware of bacteria. Almost every person knows that most bacteria are not good for people and that they can cause various diseases. When a person is attacked by bacteria, his or her immune system will break down if it is unable to fight off these infectious agents. Bacteria live as large groups of microorganisms which are unicellular in nature.
Bacteria are extremely tinny organisms and there is almost no place on earth where there are no bacteria. Even though they are quite small, just a couple micrometers, they are known to cause life-threatening diseases. They are most troublesome when they infect the digestive system or the respiratory system. Most bacteria are omnipresent to soil, radioactive waste, biomass, organic matter and especially water. It is not uncommon for bacteria to inhibit the bodies of life forms. Animals and plants are usually the inhibited bodies. People need to know that there are more bacteria than there are cells in the human system. Bacteria tend to thrive on the skin and the digestive tract. The process of recycling nutrients depends a lot on bacteria.
The immune system is able to fight off a vast number of bacteria but there are those who are pathogenic in nature. These bacteria are known to cause certain diseases like leprosy, cholera, anthrax and bubonic plague. When a person ends up suffering from tuberculosis, it is usually due to some bacteria.
Some diseases caused by bacteria
Tuberculosis is one of the diseases caused by bacteria. People know that it is an infectious disease. A person who is diagnosed with tuberculosis will experience severe pain in the chest and will cough a lot. It is not uncommon for people to cough up blood. A person diagnosed with tuberculosis will also experience weight loss, fatigue, loss of appetite and a fever that does not go away. When an infected person coughs or sneezes, he or she spreads the bacteria to others around him or her. People should know that there are several types of tuberculosis, like latent tuberculosis, pulmonary tuberculosis and military tuberculosis.
Pertussis is another disease that can be caused by bacteria. Most people know pertussis as a whooping cough. It is mostly the younger people who are affected with whooping cough. Some of the symptoms that occurs the most are nausea, fever and strong coughing. This disease is most common in the countries of the world which are not underdeveloped.