Tests and diagnosis
By Mayo Clinic staffDiagnosing whooping cough in its early stages can be difficult because the signs and symptoms resemble those of other common respiratory illnesses, such as a cold, the flu or bronchitis.
Sometimes, doctors can diagnose whooping cough simply by asking about symptoms and listening to the cough. Medical tests may be needed to confirm the diagnosis. Such tests may include:
- A nose or throat culture and test. Your doctor takes a nose or throat swab or suction sample. The sample is then checked for evidence of the presence of whooping cough bacteria.
- Blood tests. A blood sample may be drawn and sent to a lab to check for a high white blood cell count. White blood cells help the body fight infections, such as whooping cough. A high white blood cell count typically indicates the presence of infection or inflammation. This is a general test and not specific for whooping cough.
- A chest X-ray. Your doctor may order an X-ray to check for the presence of inflammation or fluid in the lungs, which can occur when pneumonia complicates whooping cough and other respiratory infections.
- Pertussis (whooping cough): What you need to know. Centers for Disease Control and Prevention. http://www.cdc.gov/Features/Pertussis. Accessed Dec. 6, 2011.
- Hewlett EL. Whooping cough and other bordetella infections. In: Goldman L, et al. Cecil Medicine. 24th ed. Philadelphia, Pa.: Saunders Elsevier; 2011. http://www.mdconsult.com/das/book/body/191371208-2/0/1492/0.html#. Accessed Dec. 6, 2011.
- Long SS. Pertussis. In: Kliegman RM, et al. Nelson Textbook of Pediatrics. 19th ed. Philadelphia, Pa.: Saunders Elsevier; 2011. http://www.mdconsult.com/das/book/body/208746819-6/0/1608/0.html. Accessed Dec. 6, 2011.
- Centers for Disease Control and Prevention. Updated recommendations for use of tetanus toxoid, reduced diphtheria toxoid and acellular pertussis vaccine (Tdap) in pregnant women and persons who have or anticipate having close contact with an infant <12 months. 2011;60:1424. http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6041a4.htm?s_cid=mm6041a4_e%0d%0a. Accessed Dec. 6, 2011.
- Yeh S, et al. Clinical features and diagnosis of Bordetella pertussis infection in infants and children. http://www.uptodate.com/home/index.html. Accessed Dec. 6, 2011.
- Byrd EM, et al. Clinical features and diagnosis of Bordetella pertussis infection in adolescents and adults. http://www.uptodate.com/home/index.html. Accessed Dec. 6, 2011.
- Yeh S. Treatment and prevention of Bordetella pertussis infection in infants and children. http://www.uptodate.com/home/index.html. Accessed Dec. 6, 2011.
- Byrd EM, et al. Treatment and prevention of Bordetella pertussis infection in adolescents and adults. http://www.uptodate.com/home/index.html. Accessed Dec. 6, 2011.
- Recommended immunization schedule for adults aged 19 years and older — United States, 2013. Centers for Disease Control and Prevention http://www.cdc.gov/vaccines/schedules/hcp/child-adolescent.html. Accessed Feb. 19, 2013.
- Recommended immunization schedule for persons aged 0 through 18 years — United States, 2013. Centers for Disease Control and Prevention http://www.cdc.gov/vaccines/schedules/hcp/child-adolescent.html. Accessed Feb. 19, 2013.


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