New York City has become a focal point in the CDC’s battle against an Ebola outbreak in the United States, the agency said in a report released Friday.

“New York City is a frequent port of entry for travelers from West Africa, a home to communities of West African immigrants who travel back to their home countries, and a home to health-care workers who travel to West Africa to treat Ebola patients,” said the Centers for Disease Control and Prevention’s report titled “Surveillance and Preparedness for Ebola Virus Disease — New York City, 2014.”

The city’s Department of Health and Mental Hygiene has identified 88 people arriving from the Ebola nations thought to have symptoms of the virus, but all were cleared. But the report said the diagnosis of some patients was delayed “because of hesitancy by health-care providers to examine patients or by laboratory workers to handle specimens.”

“To ensure that NYC is prepared to manage Ebola cases and prevent disease transmission, the NYC Department of Health and Mental Hygiene (DOHMH), in close coordination with local hospitals and clinicians, nongovernmental organizations and community groups, and city, state, and federal agencies, established systems around Ebola surveillance and management of suspected cases and contacts, and built upon existing general protocols for early recognition and management of persons with a viral hemorrhagic fever,” the reports said.