How does latent TB affect the medical part of the application? If the person is already on a medication (Isoniazid) for it.
Thanks.
Hi,
Yes it does, but well not be a refused due to healed TB. You may be asked to do re-medical and some additional testes like C.T Scan, Sputum , comparison X-ray etc.. it will delay the process by 6-9 month further delay after medical.See other details on this post, after you will receive PR with medical surveillance for inactive TB.
http://www.canadavisa.com/canada-immigration-discussion-board/-t84219.0.htmlDo not worry go for medical and inform the DMP regarding your treatment. 
hope it helps,
hmisabpk