Tuberculosis is a communicable disease caused by many strains of mycobacteria, especially tubercle bacillus. It spreads through the lymph nodes and bloodstreams to organs within the body but most frequently found in lungs. It always transmitted through air from the infected persons cough and sneezes and may be life-taking if left untreated. The impact factor of journal provides quantitative assessment tool for grading, evaluating, sorting and comparing journals of comparable kind. It reflects the typical number of citations to recent articles published in science and science journals during a particular year or period, and is usually used as a proxy for the relative importance of a journal within its field. It’s first devised by Eugene Garfield, the founding father of the Institute for Scientific Information. The impact factor of a journal is evaluated by dividing the amount of current year citations to the source items published therein journal during the previous two years.