Klebsiella pneumoniae Carbapenemase–2, Buenos Aires, Argentina

the broad spectrum of affected species, particularly raptors. A raptor was the index case in Denmark (7). Current surveillance efforts in regions free from the virus favor investigation of signifi cant death events of waterfowl and active sampling of healthy waterfowl as the means for early detection (e.g., 9). Many national surveillance programs are heavily infl uenced by the infl uenza virus (H5N1) outbreak in 2005 at Qinghai Lake in China, where hundreds of geese, gulls, and cormorants died during the breeding season (10). However, large die-offs may be anomalous or restricted to communal breeding sites of waterfowl where juvenile birds amplify and spread the virus within the breeding colony. Testing of public-reported singleton carcasses provides a more sensitive and robust means of early detection of this virus.