Hantavirus pulmonary syndrome, southern Chile.
2003
We analyzed data from 25 consecutive patients with hantavirus pulmonary syndrome (HPS) admitted to the Puerto Montt and Osorno Regional Hospitals, southern Chile, from 1997 to 2001, emphasizing epidemiologic, clinical, radiographic, treatment, and laboratory aspects. Hemorrhage was frequent (64%), and 48% of patients showed alterations in renal function. Ten patients died (40%). We identified three groups of patients, which included the following: 1) those with the least severe form who had prodromic symptoms without pulmonary involvement; 2) those with moderate illness who had interstitial pulmonary infiltrates, usually needed supplemental nasal oxygen, were hemodynamically stable, and had an APACHE II 12. Mild forms of HPS also exist, which are poorly known; the symptoms could be confounded with those of other viral diseases, leading to underdiagnosis.
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