Explanation:

• A disease is called endemic when the presence or usual prevalence of its infectious agent is constant within a given geographical area or population group. Hence statement 1st is correct.
• Epidemic diseases have higher mortality and morbidity than endemic diseases, owing to lack of clinical experience and knowledge, as well as innate pathogenicity. Hence statement 2nd is incorrect.
• Malaria and chickenpox are few common examples of endemic disease as they occur in certain places of the world. Hence statement 3rd is correct.