Necrotizing fasciitis is a flesh eating disease and rare infection of the deeper layers of skin and subcutaneous tissues.Many types of bacteria can cause necrotizing fasciitis. people with necrotizing fasciitis typically have a fever and appear very ill. Mortality rates have been noted as high as 73 percent if left untreated.The impact factor of journal provides quantitative assessment tool for grading, evaluating, sorting and comparing journals of similar kind. It reflects the average number of citations to recent articles published in science and social science journals in a particular year or period, and is frequently used as a proxy for the relative importance of a journal within its field.