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Doctor insights on: How Long Is Croup Contagious

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How long is croup contagious after steroid?

How long is croup contagious after steroid?

No: Steroid administration does not affect the transmission of croup. Steroids are administered to reduce difficulty breathing associated with croup. They reduce airway swelling caused by edema. ...Read more

Dr. Mark Diamond
252 doctors shared insights

Croup (Definition)

Croup is a description of variety on upper respiratory tract condition in children, including laryngitis, laryngotracheitis, laryngotracheobronchitis, bacterial tracheitis or spasmodic croup. Common symptoms are: cough, inspiratory stridor, hoarseness, barking cough, sore ...Read more


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How long is croup contagious? My son drank out nieces cup who had it last wk. Her fever is gone and she's back at school. Still has a cough. Worry?

How long is croup contagious? My son drank out nieces cup who had it last wk. Her fever is gone and she's back at school. Still has a cough. Worry?

Unlikely...: Though one may contract a virus by touching a contaminated surface and then touching the eyes, nose or mouth, the timing of your niece's illness makes it unlikely. Croup is usually caused by a virus infection, most often a parainfluenza virus. After the third day of symptoms, a patient will begin to clinically improve.The cough may in itself represent a post-viral cough that may persist for weeks. ...Read more

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How long is parainfluenza / croup contagious ?

At least a week: Most viruses follow the same basic pattern. Viral numbers expand exponentially until our immune systems can generate an effective response (fever is the first attempt). Antibody response to viruses takes 3-5 days and peak infectivity is usually the first week. We continue to shed virus for 1-2 weeks after. Respiratory viruses are spread by droplets which can travel up to 4 feet through the air. ...Read more

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My son started having symptoms of croup 48 hours ago. He was diagnosed by a Dr. today. His fever is gone now. How much longer will he be contagious?

My son started having symptoms of croup 48 hours ago. He was diagnosed by a Dr. today.  His fever is gone now. How much longer will he be contagious?

Shedding for awhile: Viral shedding, or period of contagiousness, for these types of viruses can last weeks, and are shed through the upper respiratory structures. However, since most of the shedding occurs during the time that the person is feeling very sick and febrile, let your son's behavior and overall appearance be your guide. Most daycares and schools require a 24 hour fever free period (without medications). ...Read more

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How contagious is croup?

How contagious is croup?

LIke a common cold: Croup is caused by a virus and is contagious. To put it in perspective, it is as contagious as a common cold. Good hand washing with soap and water or with hand-gel will decrease the risk of transmission. ...Read more

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Is croup contagious to an adult?

Is croup contagious to an adult?

Yes: Adults can become infected with same virus that caused their child’s croup. However, adults and older children have larger airways, and the illness is usually mild and can seem more like cold. ...Read more

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Is croup contagious to adults? My niece has it she lives upstairs

Is croup contagious to adults? My niece has it she lives upstairs

Yes: Croup is usually triggered by one of several upper respiratory viruses that are all contageous.However, the croup like illness is rather age specific, occuring most fro age 6 m to 6 yr. Older kids or adults tend to have cold like symptoms or laryngitis if they get the germ. If a person has been infected by that virus strain before they would be immune. ...Read more

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I had gotten Croup as a teen and I now get it every year in the fall im 24, is it still contagious when I have it? and will it ever go away?

I had gotten Croup as a teen and I now get it every year in the fall im 24, is it still contagious when I have it?  and will it ever go away?

Croup: Not sure why you get "croup" but if you are running fevers with it consider yourself contagious. And since croup is caused by a virus you could spread it just as if you had a cold and could. ...Read more

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Is croup contagious to adults? My niece has it she lives upstairs and she hugged me hours before she got a fever. Am i at risk

Is croup contagious to adults? My niece has it she lives upstairs and she hugged me hours before she got a fever. Am i at risk

Yes and no: Croup is triggered by several common respiratory viruses that can infect anyone at any age that is not immune.However, the response of each patient is different.Croup is a pattern that involves the rubbery and small airways of kids & primarily emerges in those 6m to 6yr. Older kids and adults tend to have a cold/cough or laryngitis with the same germ.If you had that strain as a kid you are immune ...Read more

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Contagious (Definition)

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