And further caution (one of many) from the FDA:

Administration of FluMist to persons with a compromised immune system should be based on careful consideration of potential benefits and risks. Data supporting the safety and effectiveness of FluMist in this population are limited. In addition, FluMist is a live virus vaccine, and has the potential for transmission to household contacts that have a weakened immune system. FluMist recipients should avoid close contact after receiving the vaccine.

This is not something without risk.. there are risks and like anything that has risks, lead with caution and a thorough understanding prior to making the decision.

Linkout: http://www.fda.gov/BiologicsBloodVac.../ucm080754.htm