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 In a community, an increase in new cases denotes: and explain in detail?
Incidence is defined as, "the number of new cases occurring in a defined population during a specified period of time". Incidence measures the rate at which new cases occur in a community. Ref:Parks Textbook of Preventive and Social Medicine By K.Park, 18th Edition, Page 55