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Incidence and Concentration of Enteric Viruses and Protozoa in Feces in the United States
| Pathogen | Incidence (%) | Concentration in stool (per gram) |
|---|---|---|
| Enteroviruses | 10–40 | 103–108 |
| Hepatitis A virus | 0.1 | 108 |
| Rotavirus | 10–29 | 1010–1012 |
| Giardia |
3.8 | 106 |
| 18–54a | 106 | |
| Cryptosporidium | 0.6–20 | 106–107 |
| 27–50a | 106–107 | |
Children in day care centers.
