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Epidemiology of parainfluenza virus types 1, 2 and 3 infections based on virus isolation between 2002 and 2011 in Yamagata, Japan
Author(s) -
Mizuta Katsumi,
Abiko Chieko,
Aoki Yoko,
Ikeda Tatsuya,
Itagaki Tsutomu,
Katsushima Fumio,
Katsushima Yuriko,
Matsuzaki Yoko,
Noda Masahiro,
Kimura Hirokazu,
Ahiko Tadayuki
Publication year - 2012
Publication title -
microbiology and immunology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.664
H-Index - 70
eISSN - 1348-0421
pISSN - 0385-5600
DOI - 10.1111/j.1348-0421.2012.00507.x
Subject(s) - biology , outbreak , epidemiology , isolation (microbiology) , virology , human parainfluenza virus , virus , virus isolation , microbiology and biotechnology , medicine
To clarify the epidemiology of viral acute respiratory infections (ARIs), 305 human parainfluenza virus types 1 (HPIV1), 154 HPIV2 and 574 HPIV3 strains were isolated from 16,962 nasopharyngeal swabs obtained between 2002 and 2011 at pediatric clinics in Yamagata, Japan. The total isolation frequency for HPIV1–3 was 6.1%. Unlike HPIV1 infections, HPIV3 showed clear seasonality with yearly outbreaks in the spring–summer season. HPIV2 tended to appear biannually in autumn–winter. Although no reliable techniques for the laboratory diagnosis of these infections have been established, the present results suggest that HPIV1–3 are an important causative agent of ARIs in children.