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heezing in early childhood is common, occurring in approximately 50% of children before the age of 6 years. 1 Understanding the role of respiratory viruses in triggering acute wheezing in children has been compromised by the lack of comparison groups in previous studies. 2 The objective of this study was to investigate the association (using a control group) of two common viruses-influenza virus and respiratory syncytial virus (RSV)-with acute wheezing among children, aged 1-7 years, with a past history of wheezing.
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Patricia C. Parkin (2002) studied this question.
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