Ocean City aims to have the beach fully reopened to swimmers by the upcoming weekend, reports WBOC. Swimming was banned at beaches on Sunday in Ocean City and on the 37-mile-long Assateague Island in Maryland and Virginia after used hypodermic needles and other medical waste washed ashore, reports The Washington Post. Parts of Delaware are also impacted, including Dewey Beach, where town officials also barred swimming. Delaware’s Department of Natural Resources and Environmental Control reported minimal amounts of medical waste on Delaware beaches. In Maryland, the Department of Emergency Management leads an investigation into the source of the medical waste, first appearing on shorelines on Sunday.