Passengers board the Staten Island Ferry in April in New York, where health departments are trying to ramp up contact tracing efforts.

Passengers board the Staten Island Ferry in April in New York, where health departments are trying to ramp up contact tracing efforts.

Passengers board the Staten Island Ferry in April in New York, where health departments are trying to ramp up contact tracing efforts.

Passengers board the Staten Island Ferry in April in New York, where health departments are trying to ramp up contact tracing efforts.