http://apps.who.int/tdr/publications/tdr-image-library?disease=General&location=&idNumber=&descText=&photographer=&creditSource=&x=26&y=2

It presents images related to Communicable Diseases Emerging. Images and contents may be freely reviewed, abstracted, reproduced and translated, in whole or in part, but not for sale or use in connection with the promotion of any commercial company and/or its products or services, nor for any commercial purpose whatsoever, including electronic storage and retrieval systems. Images and contents may not be used in any way contrary to the policies and principles of TDR or its co-sponsors - UNICEF, UNDP, World Bank and WHO.