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Common Contagious Diseases

By M. Segal|B. Bardige|M.J. Woika|J. Leinfelder
Pearson Allyn Bacon Prentice Hall
Updated on Sep 7, 2011

Keeping your child healthy is very important for his or her learning and development. Use the table below as a reference guide for the most common contagious diseases.

Disease Incubation Period When It Is "Catching" Symptoms Rash Length of Illness Prevention
Chicken pox 4-21 days 1 day before rash and 6 days after rash
  • Fever
  • Rash
  • Itching
Individual spots begin as water blisters, spread over whole body, form crusts by fourth day 7-10 days Varicella
German measles 14-21 days 2 days before symptoms and 3 days after
  • Fever
  • Slight cold
  • Enlarged glands

First day: reddish-purple

Second day: Scarlet

3-5 days M.M.R. vaccine
Measles 10-14 days 1 day before fever and until rash disappears
  • Fever
  • Cough
  • Conjunctivitis
Reddish-purple spots running into each other, from head downward 7-10 days M.M.R. vaccine
Mumps 12-24 days 1 day before swelling and as long as swelling lasts
  • Fever
  • Swelling under jaws
None 7-10 days M.M.R. vaccine
Scarlet fever 2-7 days From first symptoms until 7 days later
  • Fever
  • Sore throat
  • Headache
  • Vomiting
Pinpoint scarlet rash on body, not on face 7-10 days None
Whooping cough 7-14 days From beginning of cough for 3-4 weeks
  • Cold
  • Whooping cough
  • Vomiting
None 4-6 weeks D.P.T. vaccine

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