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

6-23 months old visiting study sites

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)