对高危人群进行的筛查结果显示血清学阳性率低(<1%)。 这意味着汉坦病毒感染很少无症状,并且即使在危险的人群,汉坦病毒感染也是一种罕见疾病。[54]Smith HM, Reporter R, Rood MP, et al. Prevalence study of antibody to ratborne pathogens and other agents among patients using a free clinic in downtown Los Angeles. J Infect Dis. 2002;186:1673-1676.http://www.ncbi.nlm.nih.gov/pubmed/12447746?tool=bestpractice.com[55]Yanagihara R. Hantavirus infection in the United States: epizootiology and epidemiology. Rev Infect Dis. 1990;12:449-457.http://www.ncbi.nlm.nih.gov/pubmed/1972804?tool=bestpractice.com