Sepsis Due to Haemophilus influenzae and Masked Influenza A Infection.

 is a facultative anaerobe, pleomorphic Gram-negative coccobacillus capable of causing various respiratory and blood stream infections. Introduction of childhood immunization against type b has decreased its prevalence. Invasive infection with non-typeable is increasing specially in vulnerable population. We present a case of a 69-year-old female who developed septic shock due to infection. She was also found to have influenza A infection in bronchoalveolar lavage (BAL) sample although initial test with nasopharyngeal swab was negative. This case report highlights the fact that in patients with high clinical suspicion, negative nasopharyngeal swab with polymerase chain reaction may not rule out influenza infection and BAL may be necessary to confirm the diagnosis and  can be causing bacterial superinfection in such patients. She was appropriately treated with third-generation cephalosporin for and with oseltamivir for influenza A. Her condition improved significantly with the treatment.