RSV

RSV means Respiratory Syncytial Virus

''Respiratory syncytial virus (RSV), also called human respiratory syncytial virus (hRSV) and human orthopneumovirus, is a very common, contagious virus that causes infections of the respiratory tract. It is a negative-sense, single-stranded RNA virus, and its name is derived from the large cells known as syncytia that form when infected cells fuse together''.