OBJECTIVES: To investigate a cluster of seven pneumonia cases among persons exposed to a pet-shop worker hospitalized with psittacosis. DESIGN: Epidemiological study of the outbreak, sero-diagnostic evaluation of exposed persons with pneumonia; and retrospective review of the pneumonia cases. SETTING: 450-bed teaching community hospital. PARTICIPANTS: Employees of the nursing unit where the patient with psittacosis was hospitalized. RESULTS: The index case had laboratory and clinical evidence of psittacosis. Four of the seven exposed persons who developed pneumonia had serologic results that met criteria for a diagnosis of psittacosis, and three met criteria for Chlamydia pneumoniae infection, possibly reflecting cross-reactivity between the microimmunofluorescence assays for the two diseases. The epidemiological graph suggested a relationship between the index case and the cluster of pneumonias in exposed individuals. CONCLUSIONS: Psittacosis may have been transmitted person to person in a hospital setting.
OBJECTIVES: To investigate a cluster of seven pneumonia cases among persons exposed to a pet-shop worker hospitalized with psittacosis. DESIGN: Epidemiological study of the outbreak, sero-diagnostic evaluation of exposed persons with pneumonia; and retrospective review of the pneumonia cases. SETTING: 450-bed teaching community hospital. PARTICIPANTS: Employees of the nursing unit where the patient with psittacosis was hospitalized. RESULTS: The index case had laboratory and clinical evidence of psittacosis. Four of the seven exposed persons who developed pneumonia had serologic results that met criteria for a diagnosis of psittacosis, and three met criteria for Chlamydia pneumoniae infection, possibly reflecting cross-reactivity between the microimmunofluorescence assays for the two diseases. The epidemiological graph suggested a relationship between the index case and the cluster of pneumonias in exposed individuals. CONCLUSIONS:Psittacosis may have been transmitted person to person in a hospital setting.
Authors: Stephanie L Mitchell; Bernard J Wolff; W Lanier Thacker; Paula G Ciembor; Christopher R Gregory; Karin D E Everett; Branson W Ritchie; Jonas M Winchell Journal: J Clin Microbiol Date: 2008-11-12 Impact factor: 5.948
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Authors: Yvonne Pannekoek; Veerle Dickx; Delphine S A Beeckman; Keith A Jolley; Wendy C Keijzers; Evangelia Vretou; Martin C J Maiden; Daisy Vanrompay; Arie van der Ende Journal: PLoS One Date: 2010-12-02 Impact factor: 3.240
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