What is the primary treatment for communicable diseases caused by bacteria?

Antibiotics are the primary treatment for communicable diseases caused by bacteria because they specifically target bacterial infections by inhibiting bacterial growth or killing bacteria outright. This class of medications works by various mechanisms such as disrupting cell wall synthesis, inhibiting protein synthesis, or interfering with nucleic acid synthesis, which are essential for bacterial survival and reproduction.

In contrast, antivirals are effective for viral infections, not bacterial ones. Vaccines are preventive measures designed to protect against certain bacterial diseases by stimulating the immune system to develop immunity, rather than treating existing infections. Antipyretics reduce fever and may alleviate symptoms, but they do not treat the underlying bacterial infection. Therefore, antibiotics are the appropriate choice for managing bacterial infections, making them the correct answer in this context.