Bacteria are single celled living organism. Some bacteria are Infectious bacteria that can make us ill. They reproduce at very fast note. Many bacteria emit chemicals called toxins, which can damage tissue and make you sick. Infectious bacteria are Streptococcus, Staphylococcus, and E. coli. Antibiotics are the regular treatment. Antibiotics should be taken according to doctor’s prescription. Each time Antibiotic is taken the bacteria inside the body increases it resistance against the antibiotics. In the long run we can get or spread an infection that those antibiotics cannot cure.