病毒性肺炎最常见的病原是流感病毒，副流感病毒，腺病毒，以及呼吸道合胞体病毒(RSV主要发生于儿童)。
The most common causes for viral pneumonia are influenza, parainfluenza, adenovirus, and respiratory syncytial virus (RSV appears mostly in children).
病毒性肺炎最常见的病原是流感病毒，副流感病毒，腺病毒，以及呼吸道合胞体病毒(RSV主要发生于儿童)。
The most common causes for viral pneumonia are influenza, parainfluenza, adenovirus, and respiratory syncytial virus (RSV appears mostly in children).
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