Cuddy calls House, who has already begun treatment for psittacosis. Dane continued to work to improve diagnostic methods and published on avian and human psittacosis. In humans, it causes respiratory psittacosis and eye infections, particularly chronic conjunctivitis. Initially, Pacheco's disease was thought to be a manifestation of avian psittacosis. In addition there are stories of tetanus, psittacosis, typhoid fever, trichinosis and food poisoning. Nocard also discovered the virus which causes bovine peripneumonia and studied psittacosis. They are often considered environmental pests, and can transmit diseases such as psittacosis. In 1929, a highly publicized outbreak of psittacosis hit the United States. Some outbreaks of psittacosis in poultry-processing plants have been reported. For example, the bacteria "Chlamydophila psittaci" is endemic among pigeons and causes psittacosis in humans. Psittacosis was first reported in Europe in 1879. Psittacosis is a serious disease but rarely fatal (less than 1%). House puts forward psittacosis, but Chase objects that Alfredo does not have pet parrots.