“…This interaction necessitates antigenic stimulation via the (www.pneumoworld.com) and the PROTEKT study (Felmingham et al, 2002;Reinert et al, 2001a) (www.protekt.com) and a study by Bozdogan et al focussing on eastern European countries (Bozdogan et al, 2003). For countries not covered in these studies the following sources were used: Poland (Hryniewicz, 2003;Semczuk et al, 2004;Skoczynska and Hryniewicz, 2003), United Kingdom and Wales (Miller et al, 2000), Scotland (Kyaw et al, 2003;Kyaw et al, 2002b), Republic of Ireland , Northern Ireland (Lafong et al, 1988), Slovak Republic (Trupl et al, 1997), Czech Republic (Urbaskova et al, 1996), The Netherlands (Hermans et al, 1997;Spanjaard et al, 2000), Hungary (Dobay et al, 2003;Marton, 1992;Marton et al, 1991), Greece Syriopoulou et al, 2000), Sweden (Eriksson et al, 2000), Bulgaria (Setchanova, 1995;Setchanova and Tomasz, 1999). Marked differences in penicillin G resistance exist locally within some countries, e.g.…”