https://www.selleckchem.com/products/bindarit.html OBJECTIVES Influenza remains a crucial transmissible disease from community. We aim to identify risk factors associated with mortality among hospitalized patients with severe influenza. METHODS We retrospectively reviewed medical records of adult patients with laboratory-confirmed severe influenza at a medical center between January 2016 and December 2018. The primary outcome was 30-day all-cause mortality. RESULTS Totally 96 patients were enrolled, with 73 patients in the influenza A group and 23 in the influenza B group. Eighteen (18.8%) deaths occurred within 30 days of hospitalization, including 8 (11%) and 10 (43.5%) of each group. In multivariable Cox regression analysis, factors associated with mortality were underlying diseases of liver cirrhosis (adjusted hazard ratio [AHR], 3.94; 95% CI, 1.07-14.45) and rheumatologic diseases (AHR, 7.45; 95% CI, 2.34-23.69) and the diagnosis of influenza B (AHR, 4.33; 95% CI, 1.68-11.13). CONCLUSIONS Clinician should early identify high-risk population and warning signs of severe influenza. Our results support the policy of quadrivalent influenza vaccination because influenza B could be associated with high mortality. INTRODUCTION We report an unusual case of osteomyelitis of the left foot due to syphilitic bone involvement. CASE PRESENTATION A 73-year-old man came to our attention with a four-month history of fever and a hypertrophic ulceration of the fifth metatarsal of the left foot. He had a history of syphilis treated years before. The CT scan showed an evident osteolytic area of the metatarsal phalangeal joint of the fifth left toe. The serological tests demonstrated a syphilitic reinfection. On suspicion of a bone localization of syphilis, an US-guided bone biopsy was performed. The histological examination with silver impregnation confirmed the diagnosis. The patient was treated with the traditional treatment of syphilis using penicillin, obtaining the complete res