Comparison of Community-Acquired Pneumonia in Relation to Influenza A and RS Virus Infections

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  • KOBASHI Yoshihiro
    Division of Respiratory Diseases, Department of Medicine, Kawasaki Medical School Kawasaki Hospital
  • OHBA Hideo
    Division of Respiratory Diseases, Department of Medicine, Kawasaki Medical School Kawasaki Hospital
  • YONEYAMA Hirohide
    Division of Respiratory Diseases, Department of Medicine, Kawasaki Medical School Kawasaki Hospital
  • OKIMOTO Niro
    Division of Respiratory Diseases, Department of Medicine, Kawasaki Medical School Kawasaki Hospital
  • SOEJIMA Rinzo
    Kawasaki Medical Welfare University

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Other Title
  • インフルエンザAウイルスとRSウイルス感染が関与した市中肺炎症例の比較検討
  • インフルエンザ Aウイルス ト RS ウイルス カンセン ガ カンヨ シタ シ ヂュウ ハイエン ショウレイ ノ ヒカク ケントウ

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Abstract

We experienced 142 cases with community-acquired pneumonia between April 1998 and March 2000. By measuring the titers of respiratory viruses for these cases, we were able to identify acute phase infections of influenza A virus in 10 cases and RS virus in 6 cases and determined that there was an increase in community-acquired pneumonia during both winter seasons. Thereafter we compared the clinical features of community acquired pneumonia with regard to these two types of virus infection by dividing the patients into two groups, both of which frequently included in the elderly. In the influenza virus group, such general symptoms as high fever, headache and general fatigue were dominant. Common bacteria were isolated in nine cases with mixed infection; four of them with Streptococcus pneumoniae. In the RS virus group, there were fewer general symptoms and common bacteria were isolated in four cases with mixed infection; three with Haemophilus influenzae. The severity of the illness was greater in the Influenza virus group; i.e.) three cases required mechanical ventilation and two of these three cases died. In the RS virus group, on the other hand, the prognosis was good because no mechanical ventilation was required and there were no deaths.<BR>Influenza vaccination is especially important for the elderly, because the epidemiology of the influenza virus groups showed none had a history of influenza vaccination in this study.

Journal

  • Kansenshogaku Zasshi

    Kansenshogaku Zasshi 75 (1), 42-47, 2001

    The Japanese Association for Infectious Diseases

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