1. A Cough
You are an intern examining a patient that is a 5 1/2-week-old male who was transferred from a rural clinic to your hospital with a 10-day history of choking spells. The child’s spells began with repetitive coughing and progressed to his turning red and gasping for breath. In the prior 2 days, he also had three episodes of vomiting in association with his choking spells.
What do you do next?

2. The resident also asks you to take a nasopharyngeal swab

3. Clear Chest X-ray

9. -MMWR

11. Comparative Genome Hybridization

12. Bordetella phylogeny

13. Comparative Genome Hybridization

14. Comparative Genome Hybridization
Gene content variation and structural differences in the LPS O-antigen biosynthesis region