My wife and my child have applied for a TRV to join me (on a study permit) in Canada. My child (2 years old) was diagnosed of having symptoms of down syndrome which led to the discovery of a tiny PDA that can close on its own. The two applicants have appeared at the embassy before the additional medical examinations. All the required medical reports have been submitted (echocardiogram, pediatrics and cardiologist reports). Correspondences with the embassy have repeatedly said that the application is still in process and will contact us as soon as a decision is made. This application has been in process for almost 6 months now. Does anyone know what can cause this delay?