Figure 2From: Varicella and Herpes Zoster in Madrid, based on the Sentinel General Practitioner Network: 1997–2004 Age-specific varicella incidence rates. Madrid Region Sentinel General Practitioner Network: 1997–2004. Age-specific varicella incidence rates are expressed as cases per 100,000 person-years. The ages over 15 years have been joined as the incidence is very low.Back to article page