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JOURNAL ARTICLE
REVIEW
Pertussis: Common Questions and Answers.
American Family Physician 2021 August 2
Pertussis, also known as whooping cough, remains a public health concern despite expanded immunization recommendations over the past three decades. The presentation of pertussis, which is variable and evolves over the course of the disease, includes nonspecific symptoms in the catarrhal stage, coughing with the classic whooping in the paroxysmal stage, and persistent cough in the convalescent stage. When there is clinical suspicion for pertussis, the diagnosis should be confirmed using polymerase chain reaction testing, which has replaced culture as the preferred confirmatory test. Recent evidence has confirmed a waning of acquired immunity following pertussis immunization or infection, leading to changes in tetanus toxoid, reduced diphtheria toxoid, and acellular pertussis (Tdap) immunization recommendations. Patients 11 years or older should receive at least one dose of Tdap, although Tdap may replace any dose of the tetanus and diphtheria toxoids (Td) vaccine. All pregnant patients should receive Tdap between 27 and 36 weeks' gestation with each pregnancy to convey immunity to the newborn. Cocooning (vaccinating close contacts of high-risk individuals) is no longer recommended because immunized patients can still contract and transmit pertussis. A history of seizure or hypotonic-hyporesponsive episodes after a prior pertussis vaccination is no longer a contraindication to immunization. Antibiotic treatment is intended to prevent transmission of pertussis to others and does not shorten the disease course or improve symptoms. Antibiotic prophylaxis is recommended for household contacts of someone with pertussis and for those exposed to pertussis who are at high risk of severe illness (e.g., infants, people who are immunocompromised or in the third trimester of pregnancy) or in close contact with someone at high risk. Azithromycin is the preferred antibiotic for treatment or prophylaxis.
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