What are the causes of a bacterial infection?

Bacteria are the most common pathogens, disease causing microorganism. It infected many people and surrounding too. A bacterial infection can cause severe diseases, harm to sense organs and even death. The main causes of bacterial infections are weak immune system, improper diet, food poisoning, viral fever, contact with others, chicken pox, rabies, rotten fruits and vegetables, rancid food materials, uncooked foods, unpasteurized milk, infected animal or humans, through insects, malaria, and many more.

Bacterial infections are caused by germs that enter the body through the small, hollow openings of the skin and mucous membranes in the mouth, nose, and throat. This can be bacteria or protozoa. Infections typically affect children because they have smaller passages in their bodies than adults. Some of these infections may also be caused by:

Contact with pools, lakes, or rivers that contain harmful bacteria.
Viruses that cause symptoms similar to a bacterial infection such as colds and flus; these viruses can sometimes make it hard to tell if you have an infection caused by bacteria or a virus.