Creating EventBridge rules for Amazon Web Services Region coverage
You must create a EventBridge rule for each Region for which you want to receive notifications for Amazon Health events. If you don’t create a rule, you won’t receive events. For example, to receive events from the China (Beijing) Region, you must create a rule for this Region.
Some Amazon Health events are not Region-specific. Events that aren't specific to a Region are called global events. These include events sent for Amazon Identity and Access Management (IAM). To receive global events, you must create a rule for the China (Ningxia) Region.