Increase in invasive group A streptococcal infections in England, Wales and Northern Ireland, 2008-9 Lamagni, T L and Efstratiou, A and Dennis, J and Nair, P and Kearney, J and George, R and on behalf of the national incident management team, Collective, Eurosurveillance, 14, 19110 (2009), https://doi.org/10.2807/ese.14.05.19110-en