FeverText: Assessing Fever Rates After Vaccination During the 2011-12 Influenza Season Using Text Messaging

Inclusion Criteria: 1. are 6 through 23 month olds, 2. have a visit at a study site during the study period of Nov. 1, 2011 through March 31, 2012, 3. receive trivalent inactivated influenza vaccine (TIV)/13-valent pneumococcal conjugate vaccine (PCV13)concomitantly, trivalent inactivated influenza vaccine (TIV)/without 13-valent pneumococcal conjugate vaccine (PCV13) or 13-valent pneumococcal conjugate vaccine (PCV13) without trivalent inactivated influenza vaccine (TIV)/(4) parent has a cell phone with text messaging capabilities; and (5) parent speaks English or Spanish. Exclusion criteria: 1. presence of fever \>=100.4 at time of vaccination; 2. administration of any antipyretic in the 6-hour period prior to vaccination 3. stated intent to use prophylactic antipyretics at time of vaccination before the development of a fever; 4. stated intention to move away from the NYC area \<6 month; 5. parent only speaks a language other than English or Spanish; 6. inability to read text messages; 7. children who received live attenuated influenza vaccine (LAIV) this visit; 8. children who received trivalent inactivated influenza vaccine (TIV) or 13-valent pneumococcal conjugate vaccine (PCV13) in the seven days prior to enrollment date Note: Patient may receive other vaccines in addition to trivalent inactivated influenza vaccine (TIV)/13-valent pneumococcal conjugate vaccine (PCV13)