BACKGROUND: Human metapneumovirus is a recently discovered RNA virus that typically causes respiratory disease in children. It has been linked to severe lower airway disease in hematopoietic stem cell and solid-organ transplant recipients. hMPV infection in a large population of patients with underlying cancer and varying degrees of immunosuppression has not been reported. We sought to characterize hMPV infection in patients with cancer. METHODS: Review of all cases of hMPV infection from two seasons (2005-6 and 2006-7) detected by DFA and/or real-time PCR at MSKCC, a tertiary cancer center in New York City. RESULTS: Among MSKCC patients with cancer, 51 (2.7%) of 1899 patients were positive for hMPV, including 3.2% with hematologic neoplasm and 1.7% with solid tumors. More children (4.5%) were positive than adults (2.2%). PCR detected twice as many cases as DFA. Cough and fever were common complaints. The longest shedding period was 80 days. 40 patients received radiographic evaluation; of these, 22 showed abnormalities including patchy (11), ground glass (5), and interstitial infiltrates (4). CONCLUSIONS: hMPV causes a nonspecific respiratory illness and was found in more than 2% of all tested persons with cancer. PCR detected substantially more cases than DFA. Unlike previous reports, we observed no fatalities due to hMPV, including 22 HSCT recipients with the infection.
BACKGROUND:Human metapneumovirus is a recently discovered RNA virus that typically causes respiratory disease in children. It has been linked to severe lower airway disease in hematopoietic stem cell and solid-organ transplant recipients. hMPVinfection in a large population of patients with underlying cancer and varying degrees of immunosuppression has not been reported. We sought to characterize hMPVinfection in patients with cancer. METHODS: Review of all cases of hMPVinfection from two seasons (2005-6 and 2006-7) detected by DFA and/or real-time PCR at MSKCC, a tertiary cancer center in New York City. RESULTS: Among MSKCC patients with cancer, 51 (2.7%) of 1899 patients were positive for hMPV, including 3.2% with hematologic neoplasm and 1.7% with solid tumors. More children (4.5%) were positive than adults (2.2%). PCR detected twice as many cases as DFA. Cough and fever were common complaints. The longest shedding period was 80 days. 40 patients received radiographic evaluation; of these, 22 showed abnormalities including patchy (11), ground glass (5), and interstitial infiltrates (4). CONCLUSIONS:hMPV causes a nonspecific respiratory illness and was found in more than 2% of all tested persons with cancer. PCR detected substantially more cases than DFA. Unlike previous reports, we observed no fatalities due to hMPV, including 22 HSCT recipients with the infection.
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