fowl cholera: an acute diarrheal disease (especially of chickens) caused by the microorganism that causes hemorrhagic septicemia
blood poisoning: invasion of the bloodstream by virulent microorganisms from a focus of infection
respiratory syncytial virus: a paramyxovirus that forms syncytia in tissue culture and that is responsible for severe respiratory diseases such as bronchiolitis and bronchial pneumonia (especially in children)