Respiratory Syncytial Virus (RSV) causes respiratory tract infections such as infection of the airway, lungs and middle ear. The symptoms depend on the severity of disease. Symptoms of mild illness include mild fever runny nose, cough, headache, sore throat. Severe symptoms include breathing difficulty and wheezes. The virus can be transmitted by direct contact with infectious secretions, by droplets spread, or indirectly through contaminated hands, eating utensils or articles freshly soiled by nasal or throat discharges of an infected person.