How do the two rotavirus vaccines differ?

The two rotavirus vaccine products differ in composition and schedule of administration. RotaTeq was approved by the Food and Drug Administration (FDA) in 2006. It contains five reassortant rotaviruses developed from human and bovine parent rotavirus strains; 3 doses are given in the series. Rotarix was approved by the FDA in 2008 and contains an attenuated human rotavirus strain; 2 doses are given in the series.