| No. | ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐Query‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ |
| #1 | MeSH descriptor Influenza Vaccines explode all trees |
| #2 | MeSH descriptor Influenza, Human explode all trees with qualifiers: CO,EP,IM,MO,PC,TM |
| #3 | (influenza OR flu OR grippe) NEAR/5 (vaccin* OR immuni* OR inocul*) :ti,ab,kw |
| #4 | (#1 OR #2 OR #3) |
| #5 | (child* OR preschool* OR school* OR young OR adolescent* OR infant* OR toddler* OR pediatric* OR paediatric* OR infant*):ti,ab,kw |
| #6 | (#4 AND #5) |
| #7 | (#6)from 2007 to 2011 |
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