Urbanization Increases Pathogen Pressure on Feral and Managed Honey Bees Youngsteadt, Elsa ; Appler, R. Holden ; López-Uribe, Margarita M. ; Tarpy, David R. ; Frank, Steven D. Abstract Publication: PLoS ONE Pub Date: November 2015 DOI: 10.1371/journal.pone.0142031 Bibcode: 2015PLoSO..1042031Y