https://www.selleckchem.com/products/imdk.html BACKGROUND Implementation of the Haemophilus influenzae type b (Hib) conjugate vaccine brought about a reduction in the number of cases and morbidity from type B but increase in nontypeable strain infections. CASE REPORT We had 3 cases of invasive non type Hemophilus influenzae (NTBHI) in immunocompromised children. The first was a fully vaccinated 2-year-old male with a history of pseudomonas sepsis who presented with 1 day of lethargy, fever, vomiting, and diarrhea. Blood culture was positive for Haemophilus influenzae e and cerebrospinal fluid (CSF) confirmed meningitis. Immune deficiency and genetic testing revealed X-linked agammaglobulinemia. The second case was a 4-year-old male, status post liver transplantation, who presented with pneumonia, with positive blood culture for H. influenzae. The last case was of a 2-year-old male with H. influenzae biotype VI in both blood and CSF cultures, who on follow-up was confirmed to have hypogammaglobulinemia. CONCLUSIONS For children diagnosed with an invasive disease caused by NTBHI, a workup for immunodeficiency could be warranted. With the appearance of nontype b serotypes, more studies are needed to determine epidemiology and virulence of these types, and their clinical relevance - perhaps developing a new vaccine to cover nontype b stereotypes, especially for immunodeficient patients.The authors informed the journal that an error occurred in their manuscript. The authors selected the wrong figure when uploading it due to the similarity of figures. They found this error when they were periodically sorting the experimental data and contacted the journal. This change does not affect the final results and conclusion. Reference 1. Dalong Xie, Chao Shang, Hui Zhang, Yan Guo, Xiaojie Tong Upregulation of miR-9 Target CBX7 Regulates Invasion Ability of Bladder Transitional Cell Carcinoma. Med Sci Monit 2015; 21 225-230. DOI 10.12659/MSM.893232.in English, Italian SCOPO Le inf