Informational signs can be categorized into several types:
Clinical Signs: Symptoms reported by patients, such as fever, cough, or rash, which may indicate the presence of an infectious disease. Behavioral Signs: Changes in behavior, such as increased absenteeism in schools or workplaces, which may signal a health issue. Epidemiological Signs: Patterns in data, such as clusters of cases in a particular area or demographic group. Environmental Signs: Factors in the environment, such as contamination of water sources, that could contribute to disease spread.