a: a change in frequency resulting in a change in position of a spectral line or band â compare doppler effect b: a removal or transfer from one thing or place to another â see chloride shift Learn More about shift
The most common lower respiratory tract infection is pneumonia, an infection of the lungs which is usually caused by bacteria, particularly Streptococcus pneumoniae in Western countries. Worldwide, tuberculosis is an important cause of pneumonia.ther pathogens such as viruses and fungi can cause pneumonia for example severe acute respiratory syndrome and pneumocystis pneumonia. A pneumonia may develop complications such as a lung abscess, a round cavity in the lung caused by the infection, or may spread to the pleural cavity.
Probably the most common viral infection is the sinus infection, which produces sinusitis symptoms. Throat infections, ear infections, and respiratory infections are all caused by the cold virus. These infections include sore throat, the common cold and influenza, commonly known as the flu. viral infection is caused by exposure to viruses. Viruses are disease causing organisms that can invade the body and attach themselves to your cells. As they begin to mutate and reproduces themselves, their major function is to stop the cells from functioning properly.