Four years ago the relevant branches of the Department of Health and the National Defense Medical Center conducted a joint examination of over 500 rats captured on Taiwan and the offshore islands. The survey found that hantavirus infection was present in around 20 % of rats near international ports, and in 3 % of rats for the rest of Taiwan.
四年前，衛生署檢疫總所與國防醫學院預防醫學研究所合作，在全台及離島抓了五千多隻老鼠進行調查，結果發現，國際港口有百分之二十的老鼠感染過漢他病毒，平地約百分之三．七。