London, Jun 9 -- A press report, dated today, states: At least three crew members on Holland America Line passenger (cruise) Zaandam (60906 gt, built 2000) that visited Ketchikan tested positive for swine flu. The 1,460-passenger vessel was on a seven-night, round-trip cruise that departed Seattle on May 29 and returned Friday (Jun 5). No passengers were identified with the virus, said Sally Andrews, vice president of public relations. "We did experience an elevated number of crew-members with a fever and or cold symptoms," Andrews said. Holland America distributed a letter to disembarking and embarking passengers about the situation.