The presence of yellow sputum may be associated with bacterial infection.
The yellow color of the sputum indicates that the nature of the sputum is purulent. The main components of purulent sputum are pus cells and, of course, some mucus. The presence of purulent sputum indicates a respiratory infection, especially a bacterial infection such as Staphylococcus aureus.
Routine blood tests often show leukocytosis and an increased proportion of neutrophils. Sputum culture can identify which bacterial infection is present. When the body’s immune function decreases or pathogenic bacterial infection causes inflammation, often accompanied by fever, sputum secretion in the respiratory tract will also increase, the amount of sputum increases, and the nature of the sputum will change from sticky sputum to pus sputum, and the color also changes from white to yellow.
If you have yellow sputum with discomfort, it is recommended that you go to a regular hospital and follow the doctor’s instructions for further examination, so that the cause can be clarified with the doctor’s help and targeted treatment or therapy can be carried out.