Fig. 1

Immunological evaluation and pathogens detected in patients younger than 3 years at follow-up evaluation (Group A) and in patients older than 3 years at follow-up evaluation (Group B). HSV1: herpes virus type 1; TBC: Mycobacterium tuberculosis; SP: Streptococcum Pneumoniae; NM: Neisseria Meningitidis; HHV6: Herpes Human Virus 6; HI: Haemophilus Influenzae