Creating EventBridge rules for Amazon Web Services Region coverage - Amazon Health
Services or capabilities described in Amazon Web Services documentation might vary by Region. To see the differences applicable to the China Regions, see Getting Started with Amazon Web Services in China (PDF).

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.