An adenovirus is a common virus that causes a range of diseases, including a cold, sore throat, bronchitis, pneumonia, diarrhea, and pink eye. People with weak immune systems or existing lung or heart disease can get very sick from an adenovirus infection. The virus can attack the lining of lung, eye, intestines, urinary tract, and nervous system. They account for about 10 percent of fever-like symptoms, severe respiratory infections, and diarrhea. The virus can be spread through the breath via coughing and sneezing. Usually, people heal from an adenovirus within three to seven days.
