1. Simplicity: The calendar method is straightforward and easy to implement. It requires basic tools such as a calendar and markers, making it accessible for resource-limited settings. 2. Cost-Effective: Unlike more sophisticated methods that may require advanced technology or expensive equipment, the calendar method is relatively inexpensive. 3. Effective for Seasonal Diseases: It is particularly useful for diseases with seasonal patterns, enabling health authorities to prepare for and mitigate outbreaks in advance.
