Adenovirus infections can range from mild to severe, and in some cases, can even be life-threatening. Most commonly, adenovirus infections cause mild to moderate respiratory illness such as the common cold. However, this virus can also cause more serious illnesses such as pneumonia, bronchitis, conjunctivitis, and gastroenteritis. In rare cases, adenoviruses can cause severe respiratory illnesses that can be life-threatening.
For people with weakened immune systems, such as those undergoing chemotherapy or those who have HIV/AIDS, adenovirus infections can be much more serious. These people are at risk for developing a much more severe form of the illness, known as adenoviral pneumonia, which can cause difficulty breathing, fever, and chest pain. In very severe cases, adenovirus infections can be fatal.
Babies and young children are especially vulnerable to adenovirus infections, as their immune systems are not yet fully developed. In infants, adenovirus infections can cause severe respiratory illnesses, leading to hospitalization, and in rare cases, can even be fatal.
Adenovirus infections can also cause other serious illnesses, including inflammation of the heart and central nervous system. These illnesses can cause long-term complications and, in some cases, can be life-threatening.
Given the potential for severe illness, it is important to take steps to prevent adenovirus infections. This includes washing your hands frequently, avoiding contact with people who are ill, and getting the adenovirus vaccine.