The impact has been felt system-wide across NHS organisations, local authorities, Northamptonshire Fire and Rescue Service and Northamptonshire Police.
Northamptonshire Local Resilience Forum issued the alert due to “rising demand on services and staffing levels” due to the impact of coronavirus across.
Darren Dovey, Chair of the forum, chief fire officer said: “There is already exceptional working together between partners to help the county face up to this challenge.
“Declaring this incident is a necessary step to make sure we are able to share resources where necessary which is increasingly important as more staff need to self-isolate.”
This story is being updated.