| urbanization and the dynamics of rna viruses in mallards (anas platyrhynchos). | urbanization is intensifying worldwide, and affects the epidemiology of infectious diseases. however, the effect of urbanization on natural host-pathogen systems remains poorly understood. urban ducks occupy an interesting niche in that they directly interact with both humans and wild migratory birds, and either directly or indirectly with food production birds. here we have collected samples from mallards (anas platyrhynchos) residing in a pond in central uppsala, sweden, from january 2013 to j ... | 2017 | 28323070 |