>> pelley: a new case of zika virus was reported i >> pelley: a new case of zika virus was reported in minnesota today. that makes 10 cases in five states. the mosquito-borne infection is a threat to fetuses developing in the womb. those u.s. cases are in people who traveled from south of the border, but dr. jon lapook is looking into the likelihood of r: outbreak here at home. >> reporter: brazil is fighting the spread of zika virus by trying to control its mosquito population. so far, the zika virus has not been found in any mosquitoes in the u.s., but the types of mosquitoes that could intentially carry the virus are found in this country. in fact, in warmer months, those mosquitoes can be found in regions where 60% of americans live. that's about 200 million people. the zika virus has been linked to a birth defect called microcephaly, where babies are