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Specimens collected for study and associated exposure(s) of interest.
| Specimen | Measurement(s) of Interest |
|---|---|
| Throat Swab | Presence/absence of GAS; emm-gene typing |
| Nasal (Anterior Nares) Swab | Presence/absence of S. aureus |
| Blood Samples | Vitamin D; serum ferritin levels; Immunophenotypic-profiling DNA for genetic testing |
| Head Hair (–2cm Long, Proximal Section) | Nicotine exposure |
