Retrospektivno smo analizirali povijesti bolesti hospitaliziranih bolesnika s influencom u Klinici za infektologiju KBC-a Osijek u razdoblju od 1. studenog 2009. do 28. veljače 2011. godine. Analizirali smo dob, spol, mjesec prijma u bolnicu, trajanje bolesti u danima i trajanje hospitalizacije u danima s težištem na težinu bolesti, komplikacije, rizične čimbenike, laboratorijske nalaze i terapiju. Ambulantno je pregledano 279 bolesnika oboljelih od pandemijske influence. Od toga je hospitalizirano 139 bolesnika (49,8%), a virus pandemijske influence A(H1N1) dokazan je RT-PCR-metodom u 28 bolesnika (20,1%). Hospitalizirana su 54 djeteta (do 18 godina) (38,8%) i 85 odraslih (61,2%). Rizični čimbenici zabilježeni su kod 30,9% hospitaliziranih bolesnika, najzastupljenije su bile kronične srčane bolesti i hipertenzija, dok su kronične plućne bolesti na drugome mjestu. Od komplikacija se najčešće javlja pneumonija, registrirana je u 50 hospitaliziranih bolesnika (36%). U Jedinicu za intenzivno liječenje primljeno je 9 bolesnika, u svih je dokazan virus influence A(H1N1), a smrt je uslijedila u jednog bolesnika.We conducted a retrospective study of the medical records of patients diagnosed with influenza and hospitalized at the Clinic for Infections of the Clinical Hospital Centre Osijek in the period from 1 November 2009 to 28 February 2011. Age, sex, month of admission, duration of the disease and of hospitalization in days, severity of illness, complications, risk factors, laboratory results and therapy were analyzed. We examined 279 patients at our Clinic, and hospitalized 139 (49.8%). Influenza A /H1N1 virus was detected in 28 patients (20.1%) by the RT-PCR method. Among hospitalized patients, there were 54 children (38.8%) and 85 adults (61.2%). Risk factors were found in 30.9% of hospitalized patients, and the most common were chronic cardiac diseases and hypertension followed by chronic pulmonary diseases. The most common complication was pneumonia, found in 50 (36%) of our hospitalized patients. The number of patients treated in our intensive care unit was 9, and influenza A(H1N1) virus was detected in all of them. One patient died
