One of four Canadians who returned home from a cruise ship where there was a hantavirus outbreak received a “presumptive positive” test result for the virus, Canadian officials said on Saturday.Results from the National Microbiology Lab in Winnipeg to confirm the case are expected to come over the weekend, said Bonnie Henry, the public health officer for the province of British Columbia.“Clearly this is not what we hoped for, but it is what we planned for,” Henry said.The person, one member...