Croup

  • Medical Author:
    John Mersch, MD, FAAP

    Dr. Mersch received his Bachelor of Arts degree from the University of California, San Diego, and prior to entering the University Of Southern California School Of Medicine, was a graduate student (attaining PhD candidate status) in Experimental Pathology at USC. He attended internship and residency at Children's Hospital Los Angeles.

  • Medical Editor: William C. Shiel Jr., MD, FACP, FACR
    William C. Shiel Jr., MD, FACP, FACR

    William C. Shiel Jr., MD, FACP, FACR

    Dr. Shiel received a Bachelor of Science degree with honors from the University of Notre Dame. There he was involved in research in radiation biology and received the Huisking Scholarship. After graduating from St. Louis University School of Medicine, he completed his Internal Medicine residency and Rheumatology fellowship at the University of California, Irvine. He is board-certified in Internal Medicine and Rheumatology.

Quick GuideChildhood Diseases: Measles, Mumps, & More

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Is croup contagious? How does croup spread?

Croup is contagious and is usually spread by airborne infectious droplets sneezed or coughed by infected children. When a healthy child inhales infectious droplets, symptoms can develop in two to three days. The infection can also be spread by infected mucus deposited on doors, furniture, toys, and other objects. A healthy child can become infected by accidentally touching the infectious mucus and transferring the infection into his/her mouth.

What is the incubation period for croup?

Most viral causes of croup have an incubation period of 24-72 hours between exposure to the virus and development of initial symptoms.

Reviewed on 12/14/2015
References
REFERENCES:

Malhotra, A., and L.R. Krilor. "Viral Croup." Pediatrics in Review 22.1 Jan. 2001: 5-12.

United States. Centers for Disease Control and Prevention. "Human Parainfluenza Viruses (HPIVs)." Aug. 18, 2015. <http://www.cdc.gov/parainfluenza/index.html>.

Woods, Charles R. "Patient Information: Croup in Infants and Children." UptoDate.com. Aug. 18, 2010. <http://www.uptodate.com/patients/content/topic.do?topicKey=~IJIXh1W5371lMy>. IMAGES:

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