Explanation:

- The Rajasthan government has launched a new software to monitor diseases.

- The software is designed to track both seasonal and non-communicable diseases.

- It also looks at the trend of ailments in specific areas.

- Upchar: A name that means treatment, but not related to this context.

- Cure: Common term for recovery, but not the name of the software.

- Nidaan: The correct name of the software designed for monitoring diseases in Rajasthan.

- Sehat: Means health, but is not relevant in this context.

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