Final answer:
Ceftaroline (Teflaro) covers a broad range of bacteria, especially effective against gram-positive organisms like MRSA, along with some gram-negative bacteria, but not including those with certain resistances like some strains of Klebsiella pneumoniae.
Step-by-step explanation:
Ceftaroline (Teflaro) is a broad-spectrum antibiotic that is effective against a wide range of bacteria. It is particularly effective in treating infections caused by gram-positive bacteria, including methicillin-resistant Staphylococcus aureus (MRSA). In addition to its efficacy against MRSA, ceftaroline has activity against certain gram-negative organisms, as well as streptococci and enterococci that are common culprits of complicated skin and soft tissue infections, and community-acquired bacterial pneumonia. However, it is worth noting that ceftaroline is not effective against some gram-negative bacteria such as Pseudomonas aeruginosa or certain enterobacteriaceae that express extended-spectrum beta-lactamases (ESBLs) or carbapenem-resistant strains, unlike the case of the mentioned Klebsiella pneumoniae with carbapenem resistance, where alternative treatments may be required due to its resistance profile.