A cyberattack on the Maryland Health Department in early December 2021 has indefinitely delayed some of the department’s online functionalities, and the cause of the hacking incident has yet to be disclosed.

The Maryland Health Department has not published data on coronavirus case rates for nine days as it recovers from a “network security incident,” the department said Tuesday.

The department is focused on “gaining full visibility into the affected network infrastructure” and working to bring affected IT systems back online following the hack, department spokesperson Andy Owen told CNN in an email.

In the meantime, data on vaccinations and hospitalizations, among other information related to the virus, is still being published, Owen said. “Our remaining data reports will be updated at the earliest opportunity.”

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