Medical waste that washed ashore in North Carolina this week poses no health hazard, but more trash, including a surgical mask with a warning label, turned up on a South Carolina island, official said. State and Navy officials said Thursday the North Carolina garbage was not infectious and wouldn't harm beachgoers. Two garbage bags of needles, rubber gloves, medication and IV bags traced to the Navy washed ashore in Atlantic Beach two days earlier. More than 100 Navy personnel combed the beaches a second day Thursday gathering the refuse traced to the USS Newport and USS Nassau. A Navy spokesman, admitting the Navy was embarassed by the incident, said the beaches would be spotless for weekend sunbathers.