|Bacteria are the microscopic organisms that cause internal or external infections to human body. Some of the harmful bacteria are pathogenic and lethal. The species that caused infections are Escherichia coli, pseudomonas, streptococcus and many more. These communicable diseases are transferred to one another through variety of means such as food, air and water. Antibiotics have been used in the treatment of bacterial infections such as cholera, diphtheria, syphilis and meningitis. Most of the communicable diseases occur in African countries. Most journals are highly specialized, although some of the oldest journals publish articles, reviews, editorials, short communications, letters, and scientific papers across a wide range of scientific fields. Journals contain articles that peer reviewed, in an attempt to ensure that articles meet the journal's standards of quality, and scientific validity. Each such journal article becomes part of the permanent scientific record.