In a campaign against Histoplasmosis, a series of branched organs with nested birds were created by American ad agency Publicis. Histoplasmosis is a disease that affects the lungs and is contracted through fungi. The fungus found in bird droppings is a major contributor to cases of Histoplasmosis. Thus, the ad's text of “birds infest more than trees” warns of the danger of bird infestations. The accompanying drawings with birds inside pseudo-organs further emphasizes this fact.
Through the print ads, histodisease.org hopes to raise awareness for the avoidable ailment. The campaign was created to reduce the number of deaths resulting from bird infestations. Over 600 people a year fall victim to the disease. It's estimated that there are 500,000 people in America alone that contract Histoplasmosis.