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Pinellas County officials are repeating warnings to residents about West Nile virus, saying they have had 19 cases of the mosquito-borne illness in chickens so far this year. The chickens, which are not sickened by West Nile, act as indicators for the county, a sort of first-line defense. Officials test the chickens each week at seven locations around Pinellas. Mosquito control technicians continue to aggressively treat known breeding areas by ground and air. [Source: Orlando Sentinel]
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