Increase in Haemophilus influenzae Detection in 13-Valent Pneumococcal Conjugate Vaccine Immunized Children With Acute Otitis Media.

NTHi was the predominant pathogen in ear cultures from severe acute otitis media (AOM) episodes in PCV-13 vaccinated children, more commonly in girls. NTHi-AOM episodes were associated with more myringotomies due to a higher treatment failure incidence. The low rate of ß-lactamase NTHi isolates in middle ear fluid cultures from PCV-13 vaccinated children presenting with AOM strengthens to still use amoxicillin as the first-line antibiotics.