search buttonmobile navigation expand button

The information contained on this page is provided as general health information and is not intended to substitute as medical advice and direction from your physician or health care provider. Please direct any questions related to your health care provider. In an emergency, call 9-1-1 or go to the nearest emergency center.


Secondary infections

Definition

A secondary infection is an infection that occurs during or after treatment for another infection. It may be caused by the first treatment or by changes in the immune system.

Two examples of a secondary infection are:

  • A vaginal yeast infection after taking antibiotics to treat an infection caused by bacteria
  • Pneumonia caused by bacteria after having an upper respiratory infection (like a cold) that was caused by a virus

visHeader

Secondary infectionImmune system structures

References

Dockrell DH, Sundar S, Angus SBJ, Hobson RP. Infectious disease. In: Walker BR, Colledge NR, Ralston SH, Penman ID, eds. Davidson's Principles and Practice of Medicine. 22nd ed. Philadelphia, PA: Elsevier Churchill Livingstone; 2014:chap 13.

Reid PT, Innes JA. Respiratory disease. In: Walker BR, Colledge NR, Ralston SH, Penman ID, eds. Davidson's Principles and Practice of Medicine. 22nd ed. Philadelphia, PA: Elsevier Churchill Livingstone; 2014:chap 19.