Final answer:
Treating for gonorrhea and chlamydia requires a combination regimen due to antibiotic resistance and co-infection. It helps prevent reinfection and spread of infection.
Step-by-step explanation:
Treating for gonorrhea and chlamydia is important because these two sexually transmitted infections often co-infect individuals. In the case of gonorrhea, antibiotic resistance has become a significant concern, making it difficult to treat. Therefore, the CDC recommends a combination regimen of ceftriaxone and azithromycin to cover both gonorrhea and chlamydia. Treating for chlamydia along with gonorrhea helps prevent reinfection and spread of infection to others.