How soon do symptoms occur?
The first cold-like symptoms usually occur five to 10 days, or up to 21 days, following exposure to an infected person. During this time, few people suspect that the cold symptom or mild cough is pertussis, yet they are highly infectious to others.

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1. What is pertussis?
2. Who gets pertussis?
3. How is pertussis spread?
4. What are the symptoms of pertussis?
5. How soon do symptoms occur?
6. How is pertussis diagnosed?
7. What is the treatment for pertussis?
8. How long is an infected person infectious to others?
9. Should an infected person be excluded from work or school?
10. How can pertussis be prevented?
11. Are there any side effects to the pertussis vaccine?