http://www.flickr.com/photos/ep_jhu/3308079338

Medicine

http://www.flickr.com/photos/unicefsverige/4416722040

Aid

http://www.flickr.com/photos/arthur_chapman/3780143684

Vector

http://www.flickr.com/photos/ajc1/996580752

Virus

http://www.flickr.com/photos/lupinoduck/5966487863/sizes/m/in/photostream/

Chicken Pox

http://www.flickr.com/photos/andresrueda/2983149263/sizes/z/in/photostream/

Vaccine

http://www.flickr.com/photos/vox/3407675910/sizes/z/in/photostream/

Polio

Funghi

http://www.flickr.com/photos/brucemckay/3964358090/sizes/z/in/photostream/

Protozoa

http://www.flickr.com/photos/microagua/3166917565/sizes/z/in/photostream/

Tuberculosishttp://www.flickr.com/photos/teseum/4457244023/sizes/z/in/photostream/