Walt Disney World Resort in Orlando and Disneyland Resort in Anaheim both remain open to the public but preventative measures have been implemented, park officials said in a statement.
That includes an increase in hand sanitizer throughout the parks and more frequent "cleaning and disinfection in high guest contact areas."
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Guests and cast members are also being regularly reminded about good hygiene practices and informed about illness prevention.
Disneyland Paris had already reinforced sanitation procedures, such as extra cleaning of outdoor sites.
Tokyo Disneyland set to close through mid-March amid coronavirus concerns
All three Asian parks -- Shanghai Disneyland, Hong Kong Disneyland and Tokyo Disney Resort - have been closed over the virus outbreak. The Tokyo park closed in late February and is expected to remain shut down through March 15.
Disney said Shanghai Disney Resort partially resumed operations Monday.
The Associated Press contributed to this report.
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The Walt Disney Co. is the parent company of this station.