Yes they are called endemic diseases.

What It Means When a Disease Is Endemic

An endemic disease is a disease that is always present in a particular population or region. Every year, the amount of endemic disease is considered a “baseline” of what is expected to persist indefinitely. Some of the most recognized endemic diseases include the flu, malaria, HIV, and syphilis. Many experts predict that COVID-19 will become an endemic disease at some point.

https://www.verywellhealth.com/what-is-an-endemic-disease-3132825