Epidemiology of OM Pathogens of Those Undergoing Tympanostomy Tube Placement in the Era of PCV13

Objectives:Determine the microbiology of otitis media (OM) since the introduction of the 13-valent pneumococcal conjugate vaccine (PCV13) in March 2010.Methods:The population included pediatric patients undergoing tympanostomy tube placement between August 2012 and June 2013. Middle ear effusion was sent for aerobic culture and antibiotic susceptibility testing. Statistical analysis will be performed to compare those who received PCV13 and those who only received the PCV7 vaccine. Preliminary data from August 2012 to December 2012 included 72 ears, of which 21 had fluid. Seven of these 21 ears cultured Staphylococcus aureus, Haemophilus influenza, and Pseudomonas aeruginosa. Three patients with positive cultures of Staphylococcus or Haemophilus were vaccinated with at least one dose of PCV13, and 2 patients that cultured Staphylococcus or Pseudomonas had the PCV7 vaccine. All of the cultures were susceptible to a quinolone.Results:Two cultures of Staphylococcus and Haemophilus were resistant to Bactrim. T...