- 37 No screening for transmissible diseases took place at the Athens Airport Holding facilities.59 The CPT recommends that new arrivals at these facilities are screened for infectious diseases, including tuberculosis. In all centres, medical examination upon arrival should be carried out, including screening for skin infections. v. staffing 75. The CPT reiterates that staff in centres for immigration detainees have a particularly onerous task. Firstly, there will inevitably be communication difficulties caused by language barriers. Secondly, many detained persons will find the fact that they have been deprived of their liberty difficult to accept. Thirdly, there is a risk of tension between detainees of different nationalities or ethnic groups. Consequently, the CPT attaches particular importance to the careful selection and appropriate training of supervisory staff in centres for immigration detainees. As well as possessing well-developed techniques of interpersonal communication, the staff concerned should be familiarised with the different cultures of the detainees and at least some of them should have relevant language skills. 76. Regrettably, no efforts have been made either to assign specially trained and dedicated staff to work with irregular migrants or to increase staff numbers. Consequently, the only role left to the police officers is one of control and enforcing a warehousing policy. The staff complement attached to the facilities visited remained totally insufficient; for example at the time of the visit, at both the Filakio and Pagani centres there were only six police officers on duty during the day for, respectively, 201 and 548 irregular migrants. The CPT once again calls upon the Greek authorities to review the staff complement attached to each special facility for irregular migrants and police holding facility. Further, the Committee recommends that the Greek authorities provide adequate training for staff working in dedicated detention facilities for irregular migrants. 77. In discussions with staff, it became evident that it was not only the low staff complement which resulted in restrictions on the movement of irregular migrants. In some facilities, staff said that they would faced severe disciplinary punishment in the event of an escape from one of the centres. Such a threat played an important role in influencing their behaviour towards the detained migrants. Not surprisingly, many police officers performing guard duties in dedicated facilities for the detention of irregular migrants have adopted a no-risk approach, preferring for instance to keep irregular migrants locked up in their cells rather than permitting access to the yards which might increase opportunities for escape. It also sheds light on the reasons for the alleged severe reaction by police officers when an escape or attempted escape does takes place. The CPT would like to receive the comments of the Greek authorities on the above. 59 The Piraeus Facilities accommodated irregular migrants previously detained at Petrou Ralli. Therefore, medical screening of new arrivals on transmissible diseases was not carried out.