Your veterinarian may administer medications for vomiting and antibiotics to reduce or treat additional infections. (dogcare.dailypuppy.com)
Instead, dogs should receive supportive care and treatment that helps prevent additional infections from developing while the white blood cells are suppressed (lymphopenia). (1800petmeds.com)
The coughing up of green phlegm may be due to a worsening of symptoms (including additional infections by opportunistic pathogens), without listening to the lung sounds it would be impossible to say if there is any improvement. (wagwalking.com)