Rehoboth Beach announced its closure to swimmers on Monday, joining Dewey Beach and Fenwick Island after medical waste began washing ashore Sunday, though a news release from the city said the closure is "primarily due to rough surf conditions.

Sixty state and federal agencies were working Monday to try to contain an onshore wash of medical waste, including hundreds of hypodermic needles and feminine hygiene products, over the weekend along the coastline from Delaware to Virginia,

The Department of Natural Resources and Environmental Control has issued a one-week recreational water advisory for nearly all Atlantic Ocean beaches in Delaware, two days after medical waste started washing ashore. Emergency response teams are monitoring state park beaches, the advisory said.

CHINCOTEAGUE, Va. — Medical waste coming ashore has necessitated a closure of all ocean-facing beaches at Assateague Island National Seashore, according to the national seashore’s Facebook page. The national seashore said the closures range from Fenwick Island to Chincoteague as a result of the medical waste.

Some beaches in Ocean City, Maryland, have been shut down after medical waste – including syringes and pill bottles – washed ashore.

Officials are warning people to stay out of the ocean at several beaches in Maryland, Delaware and Virginia after they say medical waste, including hypodermic needles, washed ashore. Assateague Island National Seashore closed all ocean-facing beaches in Maryland and Virginia to swimming and wading.