Pneumonia is a respiratory condition in which there is infection of the lung. Upper respiratory tract infections are the illnesses caused by an acute infection which involves … the upper respiratory tract: nose, sinuses, pharynx or larynx.f you feel that you have an upper respiratory infection you should remember to drink plenty of fluids … and eat chicken noodle soup. An upper respitory infection is a viral infection that has noticable signs of runny nose, coughing, and fever.