Rotavirus

Doune Porter / GAVI

It kills anywhere from a quarter-million to half-a-million kids every year and is one of the world’s leading causes of child mortality.

But it wasn’t too long ago hardly anybody had even heard of it: Rotavirus. It is the killer bug that set off Bill Gates and gave direction to his philanthropy. Now his foundation is launching a major new global jab against rotavirus and another big killer of young children, pneumococcal disease.