Infection also leads to immunization. Both GB and SA had considerably higher incidence numbers over the last 12 months than most of the EU, with GB running a v

Infection also leads to immunization. Both GB and SA had considerably higher incidence numbers over the last 12 months than most of the EU, with GB running a very successful vaccination program. Particularly in SA researches estimate that almost anyone has had one or more infections in the last 24 months.