The positive rates of specific IgM antibody were as below: RSV:17.0%,IV: 21.8%,PIV: 9.5%,ADV:(17.4%,)C BV: 5.0%,EBV: 8.1% and MP: 21.2%.

• 7种病毒早期特异性IgM抗本阳性构成比:RSV占17.；0%25；IV占21