Fig. 2

Geographical distribution of HPV infection in pediatric tonsils. A darker shade of blue represents a higher prevalence (≥5%), while a lighter tone represents a lower prevalence (< 5%). USA – 0%¹⁷, 4%²³, United Kingdom – 0%¹⁸, China - 0%¹⁹, 1%¹⁴, Belgium – 21%²⁰, Turkey – 7%²¹, Russia – 13%¹³, Greece – 9%²², Brazil – 0%²⁴, Finland – 8%²⁵