Most colds are caused by viruses. Rhinoviruses
Corona viruses, Para influenza viruses,
respiratory syncytial virus, adenoviruses
Based on symptoms,
Isolation of viruses for definitive studies
There are a number of acute and chronic
infections that can affect the lower respiratory
tract. The two most common infections are
bronchitis and pneumonia.
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, high fever, coughing and fatigue.
Pulmonary function test
Once a diagnosis is made, therapy is directed
at the specific organism responsible.
An enteric-coated vaccine prepared from
certain serotypes of adenoviruses is available,
but is only used in military recruits.
In AIDS patients, trimethoprim
sulfamethoxazole, or other antimicrobials can
be given for prophylaxis of Pneumocystis