Risk Factors for Otitis Media and Carriage of Multiple Strains of Haemophilus influenzae and Streptococcus pneumoniae

	*Research* Risk Factors for Otitis Media and Carriage of Multiple Strains of Haemophilus influenzae and Streptococcus pneumoniae Jennifer St. Sauver,* Carl F. Marrs,* Betsy Foxman,* Patricia Somsel,† Robbie Madera,* and Janet R. Gilsdorf* *University of Michigan, Ann Arbor, Michigan, USA; and Regional Medical Laboratories Inc, Battle Creek, Michigan, USA†

	Back to article Figure 2. Example of S. pneumoniae isolates collected from child no. 37 during four sampling periods. Lane 1: Isolate collected at week 1; lanes 2-3: isolates collected at week 2; lanes 4-7, 9-13: isolates collected at week 3; lane 8: low molecular weight lambda ladder; lanes 14-21: isolates collected at week 4.

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