You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Endemic disease is defined as a disease- and explain in detail?
Ans. is 'a' i.e., Occurance regularly in expected frequency * Sporadic - Disease occuring irregularly from time to time.* Endemic - Disease occuring regularly in expected frequency.* Epidemic - Disease occuring in excess of expected frequency.* Pandemic - Epidemic affecting a large proportion of population over a wide geographic area.