In a statement the company says
'Dessie was an extremely hard working and valued member of staff who was very popular with all his colleagues and he will be missed by everybody who worked with him.
The company have offered their support to the Quinn family in Donegal. They also continue to liaise on an ongoing basis with Dessie's colleagues in the company who worked with him in Sierra Leone about any support they may need at this time. KNNS acknowledge and are grateful for the assistance received from the HSE's Health Protection Surveillance Centre during this challenging and sad time.'