46 THE GREEK OMBUDSMAN Occasionally, incidental conclusions from repeated visits of the Ombudsman are added throughout the year to detention facilities (Tavros, Moria, Thessaloniki), which are the starting point for external controls of forced returns of foreigners under Law 3907/2011. 4.c. Provision of medical services, detection and treatment of contagious diseases The lack of continuous and effective provision of medical services has as a direct result the impossibility of identifying and treating infectious or contagious diseases. In at least two cases (Pre-Departure Centres of Thessaloniki and Kos) there were severe problems of male detainees, which were exacerbated by inadequate cleanliness and were treated only by nursing staff, whereas at the Corinth Centre the symptoms were treated by a doctor, but there was also a problem of cleanliness. At the Moria Centre, Health Units SA only took on healthcare services as of August 2018 but did not provide medical staff, so the needs of the prisoners are covered either by examining them at the Hellenic Centre for Disease Control and Prevention (HCDCP) that provides services at the Reception and Identification Centre, or through referral to the General Hospital of Mytilene. However, both alternatives faced difficulty in responding to these needs. Additionally, as the Ombudsman has consistently found, the files of deportees do not include comprehensive medical history records, while people with serious health problems are not identified during the registration and identification process. Hence, they need to be referred to medical services in order to receive appropriate medical care or to be identified as being vulnerable in order to lift their detention.