BIOL 103 Lecture 1: BIOL103 Lecture 1: Part 2: Lecture 1
5 Mar 2016
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The zika pandemic: zika virus is spreading rapidly out from a narrow equatorial band, zikv is an arbovirus (arthropod borne) like dengue, yellow fever, chikangunya, and west. 5 strains of zika: has diverged from older strains, very closely related to the other viruses mentioned above. Phylogeography - geographic distributions of genealogical lineages, especially those within and among closely related species. President bush would never mention evolution, during the bird u pandemic in his press releases. Pandemic u occurs when a new strain of in uenza emerges that can be transmitted easily from person to person -- and for which there is little or no natural immunity . A pandemic is possible when an in uenza a virus makes a dramatic change (i. e. , shift) and acquires a new h or h+n. This shift results in a new or novel virus to which the general population has no immunity .
