Most PCR-positive stool samples contained HBoV2B (76 of 101), making this genotype the most commonly detected enteric human bocavirus (Table  1) . HBoV3 was identified in 11 stool samples and HBoV4 in 6, making them the second and third most common enteric human bocaviruses, respectively, in the regions analyzed here. HBoV1 was detected in only 4 of the 101 positive samples. Stool samples from patients with AFP in Nigeria and Tunisia both showed a high prevalence of HBoV2A+B (21%-26%). Because both patients with AFP and healthy contacts from Tunisia showed a comparable prevalence of HBoV2, no asso- ciation was observed between AFP and HBoV2 excretion. The prevalence of HBoV2 in adults with diarrhea from the United States and Nepal were also compared with those in healthy matched subjects. No associations were observed between HBoV2 shedding and diarrhea. Although the numbers of HBoV3 and HBoV4 detected were relatively small, it was noticed that the 8 HBoV3-and 4 HBoV4-positive samples were found among 192 samples from patients with AFP, whereas these 2 species were not detected among 96 healthy Tunisian matched contacts. Comparing the combined Nigerian and Tunisian patients with AFP infected with HBoV3 and HBoV4 to Tunisian controls yielded a 2-tailed Fisher's exact P value of .01, whereas comparing only the Tunisian patients with AFP with Tunisian controls gave a P value of .059. HBoV3 was also found in 1 patient with diarrhea from the United States and from 1 healthy person each from the United States and Nepal. HBoV4 was also found in a patient with diarrhea and 1 healthy adult from the United States. Further testing will be needed to confirm this trend of an association of HBoV3/4 with AFP in children or of the association of HBoV2 with diarrhea [8] .