<Tr> <Td_colspan="2"> (edit on Wikidata) </Td> </Tr> <P> Lower respiratory tract infection (LRTI), while often used as a synonym for pneumonia, can also be applied to other types of infection including lung abscess and acute bronchitis . Symptoms include shortness of breath, weakness, fever, coughing and fatigue . </P> <P> There are a number of symptoms that are characteristic of lower respiratory tract infections . The two most common are bronchitis and cancer and edema . Influenza affects both the upper and lower respiratory tracts . </P> <P> Antibiotics are the first line treatment for pneumonia; however, they are not effective or indicated for parasitic or viral infections . Acute bronchitis typically resolves on its own with time . </P>

Acute viral infection of upper and lower respiratory tracts is called