In a major advance towards a universal flu jab which would protect people against all strains of the virus researchers have developed a new vaccine that protects against multiple strains of both seasonal and pandemic H1N1 influenza in mouse models. 'One of the problems with current influenza vaccines is that we have to make predictions about which virus strains will be most prevalent every year and build our vaccines around those predictions' said one of the researchers Ted Ross from the University of Georgia in the US. 'What we have developed is a vaccine that protects against multiple different strains