RT Journal Article SR Electronic(1) A1 Ramsay, M E YR 2003 T1 Vaccination catch-up campaign in response to recent increase in invasive Hib infection in the United Kingdom – implications for the rest of Europe? JF Weekly releases (1997–2007) VO 7 IS 19 SP 2225 OP DO https://doi.org/10.2807/esw.07.19.02225-en UL https://www.eurosurveillance.org/content/10.2807/esw.07.19.02225-en