Respiratory viral infections are a leading cause of disease worldwide. However, the overall community prevalence of infections has not been properly assessed, as standard surveillance is typically acquired passively among individuals seeking clinical care.

中文翻译：

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主动监视记录了由于呼吸系统疾病而寻求临床护理的比率。

呼吸道病毒感染是全球疾病的主要原因。但是，总体社区感染率尚未得到适当评估，因为标准监测通常是在寻求临床护理的个体中被动获得的。