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How is Pertussis diagnosed?

See how Pertussis is diagnosed. Which specialists are essential to meet, what tests are needed and other useful information for the diagnosis of Pertussis

Pertussis diagnosis

Pertussis, commonly known as whooping cough, is a highly contagious respiratory infection caused by the bacterium Bordetella pertussis. Diagnosing pertussis involves a combination of clinical evaluation, laboratory tests, and medical history assessment.



Clinical Evaluation: The first step in diagnosing pertussis is a thorough examination by a healthcare professional. They will evaluate the patient's symptoms, which typically progress through three stages: the catarrhal stage (similar to a common cold), the paroxysmal stage (characterized by severe coughing fits), and the convalescent stage (recovery period). The presence of a persistent cough lasting more than two weeks, particularly if accompanied by a "whooping" sound during inhalation, is a strong indicator of pertussis.



Laboratory Tests: To confirm the diagnosis, laboratory tests are conducted. The most common method is a PCR (polymerase chain reaction) test, which detects the genetic material of the pertussis bacteria in a respiratory sample, usually obtained through a nasopharyngeal swab. PCR tests are highly sensitive and specific, providing accurate results even during the early stages of infection. Another test is serology, which measures the presence of pertussis-specific antibodies in the blood. Serology is particularly useful in later stages of the disease when PCR may yield false-negative results.



Medical History Assessment: Gathering a detailed medical history is crucial in diagnosing pertussis. The healthcare professional will inquire about the patient's vaccination history, previous exposure to pertussis, and any recent contact with individuals displaying pertussis symptoms. Pertussis is more common in infants and young children, but it can affect individuals of any age.



It is important to note that early diagnosis and treatment of pertussis are vital to prevent its spread and manage symptoms. If pertussis is suspected, it is essential to consult a healthcare professional promptly for proper evaluation and guidance.


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