Task: Answer Verification
Input (English): Question: Is human polyomavirus DNA detected in Guthrie cards ( dried blood spots ) from children who developed acute lymphoblastic leukemia?
Answer: JCV or BKV were not found in any of the dried blood spots of children who later developed ALL or in the healthy controls. These findings suggest that it is unlikely that childhood ALL is associated with an in utero infection with JCV or BKV, although it is not possible to exclude an association with an in utero infection that has become latent in the kidneys with very low levels of circulating virus at birth.
Output (English): no