Cefprozil is a second-generation cephalosporin type antibiotic.It can be used to treat bronchitis, ear infections, skin infections, and other bacterial infections. Although there is a widely quoted cross-allergy risk of 10% between cephalosporins and penicillin, an article in the Journal of Family Practice has shown no increased risk for cross-allergy for cefprozil and several other second-generation or later cephalosporins. Currently bacteria like Enterobacter aerogenes, Morganella morganii and Pseudomonas aeruginosa are resistant to Cefprozil, while Salmonella Agona and Streptococci are susceptible to Cefprozil. Some of the bacteria like Brucella abortus, Moraxella catarrhalis and Streptococcus pneumonia have developed resistance towards Cefprozil in varying degrees. For detailed minimum inhibition concentration information, please refer to Cefprozil Susceptibility and Resistance Data sheet.