Key to virus spread

Down to Earth - - SCIENCE -

VIRUS EVO­LU­TION dif­fers by species of mos­quito car­rier. That's the find­ing of re­searchers who stud­ied how the West Nile virus has evolved. They in­fected four dif­fer­ent mos­quito species with the virus and used next-gen­er­a­tion se­quenc­ing to char­ac­terise virus pop­u­la­tions within dis­tinct tis­sues. The great­est ac­cu­mu­la­tion of mu­ta­tions oc­curred in the south­ern house mos­quito, Culex quin­que­fas­cia­tus. Dis­eases trans­mit­ted by mos­qui­toes, in­clud­ing West Nile, Zika, dengue and chikun­gunya claim sev­eral mil­lion lives each year. Cell Host & Mi­crobe, March 31

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