UN Secretary-General Ban Ki-moon has expressed concern about restrictions imposed by several countries and localities on travellers from major Ebola-affected countries a spokesperson said here Monday. Ban believes that these restrictions have put particular pressure on health care workers and those who have been on the front-line of the Ebola response said Stephane Dujarric Ban's spokesperson. (Read: Ebola facts frequently asked questions (FAQ)) 'Returning health workers are exceptional people who are giving of themselves for humanity' said Dujarric on Ban's behalf adding that they should not be subjected to restrictions that are not based on science.' Ban's remarks came after