To provide means and a method for suppressing and/or preventing an RSV-related disease.SOLUTION: An antibody capable of specifically binding to an RSV and a functional equivalent thereof contains: a heavy chain CDR1 sequence containing a sequence identical to a sequence GFSFSHYA at least 80%; and/or a heavy chain CDR2 sequence containing a sequence identical to a sequence ISYDGENT at least 80%; and/or a heavy chain CDR3 sequence containing a sequence identical to a sequence ARDRIVDDYYYYGMDV at least 80%; and/or a light chain CDR1 sequence containing a sequence identical to a sequence QDIKKY at least 80%; and/or a light chain CDR2 sequence containing a sequence identical to a sequence DAS at least 80%; and/or a light chain CDR3 sequence containing a sequence identical to a sequence QQYDNLPPLT at least 80%. There are also provided production means and a production method of the antibody, a functional portion, a derivative or an analog.SELECTED DRAWING: None【課題】RSV関連疾患を抑制および/または予防するための手段および方法の提供。【解決手段】RSVに特異的に結合することが可能な抗体およびその機能的等価物であって以下のものを含むもの:・配列GFSFSHYAに少なくとも80%同一な配列を含む重鎖CDR1配列、および/または・配列ISYDGENTに少なくとも80%同一な配列を含む重鎖CDR2配列、および/または・配列ARDRIVDDYYYYGMDVに少なくとも80%同一な配列を含む重鎖CDR3配列、および/または・配列QDIKKYに少なくとも80%同一な配列を含む軽鎖CDR1配列、および/または・配列DASに少なくとも80%同一な配列を含む軽鎖CDR2配列、および/または・配列QQYDNLPPLTに少なくとも80%同一な配列を含む軽鎖CDR3配列。ならびに上記抗体、機能的部分、誘導体または類似体の製造手段および方法。【選択図】なし