The creator of a health message assigns one of the following priority levels to the health message, based on priority level criteria:
An "Alert" priority level indicates the health message has the highest level of importance and warrants immediate action or attention by public health officials.
An "Advisory" priority level indicates the health message provides important information for a specific incident or situation, which may not require immediate action.
An "Update" priority level indicates the health message provides updated information regarding an incident or situation, which is unlikely to require immediate action.
An "Info" priority level indicates the health message provides only system-related information.