The warning comes in response to a “high risk of spread,” Ivory Coast’s health ministry said in a statement. Any suspected cases should be flagged immediately, authorities said, calling for careful sample collection and transit protocols. The Ghanaian outbreak so far involved two unrelated patients who died after developing symptoms including diarrhea, fever, nausea and vomiting. They sought treatment at the same hospital within a few days of each other and the nature of their illness was confirmed by laboratory tests. Ivory Coast shares a largely unguarded 447-mile (719 km) border with Ghana. While the World Health Organization said it is supporting a national investigation team in Ghana, it is also alerting neighboring countries considered to be at high risk. ©2022 Bloomberg LP