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Volume 20, Number 3—March 2014


Hantavirus Infections among Overnight Visitors to Yosemite National Park, California, USA, 2012

Jonathan J. Núñez, Curtis L. Fritz, Barbara Knust, Danielle Buttke, Barryett Enge, Mark G. Novak, Vicki Kramer, Lynda Osadebe, Sharon Messenger, César G. Albariño, Ute Ströher, Michael Niemela, Brian R. Amman, David Wong, Craig R. Manning, Stuart T. Nichol, Pierre E. Rollin, Dongxiang Xia, James P. Watt, Duc J. VugiaComments to Author , and for the Yosemite Hantavirus Outbreak Investigation Team
Author affiliations: California Department of Public Health, Richmond and Sacramento, California, USA (J.J. Núñez, C.L. Fritz, B. Enge, M.G. Novak, V. Kramer, S. Messenger, M. Niemela, D. Xia, J.P. Watt, D.J. Vugia); Centers for Disease Control and Prevention, Atlanta, Georgia, USA (J.J. Núñez, B. Knust, L. Osadebe, C.G. Albariño, U. Ströher, B.R. Amman, C.R. Manning, S.T. Nichol, P.E. Rollin); National Park Service, Fort Collins, Colorado, and Albuquerque, New Mexico, USA (D. Buttke, D. Wong)

Main Article


Clinical characteristics of 10 hantavirus case-patients who were exposed at Yosemite National Park, 2012

Patient characteristic
No. affected
Male sex 6
Illness clinically compatible with hantavirus pulmonary syndrome 8
Hospitalized 7
Intubated 5
Died 3
Pulmonary edema on chest radiographs 7*
Thrombocytopenia (<150,000/mm3) 8*
Elevated hematocrit (>50%) 1*
Elevated creatinine (>1.3 mg/dL) 4*

*Diagnostic tests were not performed for 2 case-patients, 1 with only mild symptoms and 1 who died.

Main Article

1Members of the Yosemite Hantavirus Outbreak Investigation Team are listed at the end of this article.