There are several tests to confirm whooping cough. Your doctor can swab inside your nose and/or throat. A lab will check the swab for whooping cough bacteria. Your doctor also may want to get a blood sample or take a chest X-ray.
What is the life cycle of Bordetella pertussis?
pertussis include four phases: one incubation period without symptoms lasting 1 week, a second one with atypical symptoms (catarrhal one) also lasting 1 week, a 3- to 6-week-long phase with the typical paroxystic cough increasing at night often associated with lymphocytosis, vomiting and, finally, the convalescent …
How long does natural immunity to pertussis last?
If your doctor confirms that you have pertussis, your body will have a natural defense (immunity) to future pertussis infections. Some observational studies suggest that pertussis infection can provide immunity for 4 to 20 years.
Can you get pertussis twice?
Can you get pertussis more than once? Reinfection appears to be uncommon but does occur. With natural infection, immunity to pertussis will likely wane as soon as seven years following disease; reinfec- tion may present as a persistent cough, rather than typical pertussis.
What is the best specimen to detect Bordetella pertussis?
It is best for you to obtain a culture from nasopharyngeal (NP) specimens collected during the first 2 weeks of cough. This is when viable bacteria are still present in the nasopharynx. After the first 2 weeks, sensitivity decreases and the risk of false-negatives increases.
How many types of Bordetella are there?
Bordetella pertussis
Bordetella bronchisepticaBordetella parapertussisBordetella avium
Bordetella/Lower classifications
What does a positive pertussis test mean?
What does the test result mean? A positive PCR test means that it is likely that the person has pertussis. However, the PCR test may also be positive with other Bordetella species. A negative PCR test means that it is less likely that the person has pertussis but does not rule it out.
Which is the highly infective stage in whooping cough?
People with pertussis are most infectious during the catarrhal period and during the first two weeks after onset of the cough (approximately 21 days).
What does catarrhal stage mean?
The initial (catarrhal) phase is indistinguishable from common upper respiratory infections. It includes nasal congestion, rhinorrhea, and sneezing, variably accompanied by low-grade fever, tearing, and conjunctival suffusion.
