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. Author manuscript; available in PMC: 2019 May 9.
Published in final edited form as: J Pediatr. 2017 May 24;187:234–239.e4. doi: 10.1016/j.jpeds.2017.04.039

Figure 2.

Figure 2.

Histogram of estimated week at last menstrual period (LMP) by vaccination status, for the final study cohort, across 10 influenza seasons. A, Women who did not receive IIV during first trimester. B, Women vaccinated with IIV during first trimester. Week 0 corresponds to the week starting January 1, 2003. Peaks in first trimester IIV administration, by week of LMP, by influenza season, were as follows: 2003-2004 (LMP = week 37 or September 8, 2003); 2004-2005 (LMP = week 85 or August 9, 2004); 2005-2006 (LMP = week 139 or August 29, 2005); 2006-2007 (LMP = week 190 or August 21, 2006); 2007-2008 (LMP = week 243 or August 27, 2007); 2008-2009 (LMP = week 297 or September 8, 2008); 2009-2010 (LMP = week 343 or July 27, 2009); 2010-2011 (LMP = week 400 or September 6, 2010); 2011-2012 (LMP = week 450 or August 22, 2011); and 2012-2013 (LMP = week 504 or September 3, 2012).