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Summary of prevalence of human papillomavirus (HPV) single and multiple infections in 407 high-risk HPV cervical squamous cell carcinomas. More than half of the patients demonstrated more than one HPV type, whereas 46% had one HPV type (green). In patients with more than one HPV type identified, the majority harbored two HPV types (blue); however a significant subset (red, orange, purple) harbored three or more HPV types.
