“…Health and frontline workers were the most exposed to the development of the fear of COVID-19 [ 3 , 4 , 5 , 6 , 7 ], even with respect to their own family members contracting the virus [ 8 , 9 ]. Most of the literature [ 10 , 11 , 12 , 13 , 14 , 15 ] has investigated mental health in health care workers; however, only a few studies [ 16 , 17 , 18 ] have investigated the effects of the pandemic on the psychological health of humanitarian volunteers who play an important role in the management of emergencies. In fact, during the COVID-19 pandemic, as well as in past epidemics [ 19 ], the overload of intensive care units for the management of the critically ill has challenged national health systems.…”