Smallpox is caused by two virus variants that is Variola major and Variola minor (VARV), this viruses belong to poxviridae family. The term âsmallpoxâ is arise in the 15th century to distinguish variola from syphilis known as the âgreat poxâ; the term âVariolaâ is taken from the Latin word âvarusâ which means âpimpleâ. Smallpox is in history ever since 1350 BCE and it were spread from the Egyptians to the Hittites in Syria. The phylogenetic statistics describes VARV as mutated from the Camel pox virus in the Middle East some 6,000-10,000 years ago. Ever since, it has been recorded throughout human history as a devastating human disease that affected up to 500 million worldwide during the 20th century and the last naturally occurring cases has been reported in 1977 in Somalia. (Smallpox: New Perspectives Regarding Risk Assessment & Management- Jan-Cedric Hansen)
Impact Factor of a scholarly journal is calculated by measuring the average number of citations to recent articles published in the particular journal. Impact factor gives the importance of a Specific journal with respect to other journals. Impact factor is calculated based on the average number of citations a paper published in a particular journal receives in a span of two years. Impact factor for the new journals will be considered after two years. Impact factor of a particular journal will give complete picture of the quality and standards of the journals.
Last date updated on June, 2014
