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Doctor insights on: How Long Is Pertussis Contagious

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How long is pertussis (whooping cough) considered contagious after symptoms begin?

How long is pertussis (whooping cough) considered contagious after symptoms begin?

Treated or not?: If pertussis is treated and you have started antibiotics you are contagious for about 5 to 7 days. If you are not treated the period extends from 3 to 6 weeks. ...Read more

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Contagious (Definition)

One is able to transmit an infection to another by ...Read more


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How long is it supposed to it take for pertussis to go away?

How long is it supposed to it take for pertussis to go away?

Pertussis: The old name for pertussis is the "100 day cough" - you should be evaluated as it can be very dangerous and only treatment is antibiotics (azithromycin) please see your doctor. ...Read more

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My baby has been diagnosed with pertussis. How long should I keep him home from daycare?

My baby has been diagnosed with pertussis. How long should I keep him home from daycare?

5 days: Once a baby has been diagnosed with pertussis, the normal treatment is Azithromycin (zithromax). One is considered contagious until one completes the 5-day course. After that your baby will not be contagious, even if he/she is still coughing. The cough can go on for awhile. Hopefully this was not because of missing vaccinations, which are quite effective at preventing pertussis in children. ...Read more

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How long does the diptheria, tetanus and pertussis vaccine last?

How long does the diptheria, tetanus and pertussis vaccine last?

5-10 years: You recieve doses of dtap at 2mo, 4mo, 6mo and then 15mo. Then a booster again at 4 years of age. Then another at age 11. And then every 5-10 years (according to some experts). If fully immunized. ...Read more

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My ob said today I should not let any adult around my newborn who did not have pertussis vaccine. Agree? How long before baby protected? 2mos? 4?

My ob said today I should not let any adult around my newborn who did not have pertussis vaccine.  Agree?  How long before baby protected? 2mos? 4?

Clarification: Centers for disease control recommends that mothers recieve tdap between 26-37 weeks pregnancy and that all household contacts- parents, siblings, grandparents and babysitters are immunized. Your infant has maximum protection after their booster shot (4th shot in series). It is estimated that household members account for 80% of infant pertussis infections. Flu shots for family members also wise. ...Read more

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How do I know if I have pertussis?

How do I know if I have pertussis?

Suspicion/duration: Since most adults have not bothered to get a pertussis booster, they represent a target of opportunity.Pertussis germs can ride into town in an international traveler or someone from the west coast & spread it to you (or your susceptible kids).In adults, it often seems to be a mild cold until you get past the initial phase, then the persistent "hundred days cough" sets in. Dx from test is possible. ...Read more