Regarding CDC -- this is where Jim works, and my kids have gone there for school field trips several times. The director is one of our best friends. I can ask them about a tour, and I think it will be quite possible. There are over 1000 people working there, in seven different "branches" (research areas). The biggest areas are malaria, HIV/AIDS, and emerging infectious diseases. There is a fascinating mosquito lab which my kids really like visiting. It is certainly the best-equipped research lab in Kenya. If there is interest, let me know and I'll set this up (it would reduce one of our days elsewhere). You would need to specify within their range of work what you want to see or learn about, since it is a huge organization.
I'm looking forward to hearing more after the Tuesday meeting!
I'm hoping that people can either talk to me at school or email me with areas of interest that I can pass on to Eden.