Exposure can be classified into several types based on different criteria:
Acute vs. Chronic: Acute exposure refers to a single, short-term contact with a factor, while chronic exposure involves long-term or repeated contact. Continuous vs. Intermittent: Continuous exposure is unbroken over a period, whereas intermittent exposure occurs in intervals. Direct vs. Indirect: Direct exposure involves immediate contact with the factor, while indirect exposure occurs through secondary sources.
