A Nosocomial infection also called Hospital acquired infection is an infection occurring in a patient, in a hospital or other health care facility in whom the infection was not present or incubating at the time of admission. The most frequent nosocomial infections are blood stream infections, urinary tract infections, lower respiratory tract infections and infections of surgical wounds. Infection rates are higher among patients with increased susceptibility because of old age, underlying disease, or chemotherapy. 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. It is first devised by Eugene Garfield, the founder of the Institute for Scientific Information. The impact factor of a journal is evaluated by dividing the number of current year citations to the source items published in that journal during the previous two years.
Last date updated on June, 2014