A DS-1 like G9P[6] human strain CDC-6 as a new rotavirus vaccine candidate.

Authors: Wang Y, Resch T, Esona MD, Moon SS, Jiang B Abstract Human rotavirus vaccine Rotarix® (G1P[8]) has shown broad cross protection against homotypic and heterotypic Wa-like human rotavirus strains among children worldwide. This vaccine, however, appears to induce slightly less or non-consistent protection against DS-1 like rotavirus P[4] strains in some settings. In addition, children who are secretor or Lewis-negative and are vaccinated with Rotarix® often experience breakthrough infection with P[6] strains. By contrast, P[6] strains infect all children, irrespective of their secretor or Lewis status. In the present study, we report successful adaptation of a DS-1 like human rotavirus G9P[6] strain (CDC-6) to high growth in Vero cells and identify sequence changes that may...

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