Ceftaroline fosamil is an antibiotic medication used to treat bacterial infections. It belongs to the cephalosporin class of antibiotics and works by inhibiting the synthesis of bacterial cell walls, leading to the death of the bacteria. Ceftaroline fosamil is effective against a wide range of Gram-positive and Gram-negative bacteria, including methicillin-resistant Staphylococcus aureus (MRSA) and Streptococcus pneumoniae