berries linked to pomegranate seeds from turkey were only sold to costco. and costco says it's trying to reach out to customers who may have bought them. david? >> thank you, john. john schriffen in l.a. tonight. >>> now, to the new and deadly virus making global headlines this evening with reports of three more deaths. in fact, the disease has killed half of all the people diagnosed with it. a total of 33 now. tonight, it's hopped from the middle east to europe. and u.s. health officials are on alert here. abc's dr. richard besser tonight. >> reporter: it begins with fever, chills and muscle aches. then, confusion, as rapidly, your breathing becomes difficult. it's a mystery killer. and the world leading health officials are on alert. >> we really need as fast as possible to learn how to control this virus. we have to try to run faster than the virus does. >> reporter: it's called mers. and so far, its victims have either traveled to the middle east or caught it from very close contact with someone who did. but the fear is, if it mutates, so it spreads easily between people, it could take off, like sars, the deadly respiratory virus ten year