Which sulfonamide is known for treating bacterial infections and not specifically for toxoplasmosis?

Sulfacetamide is primarily used as a topical antibiotic, often in ophthalmic preparations, to treat bacterial infections specifically in the eye, such as conjunctivitis. Its use is not associated with the treatment of toxoplasmosis, a parasitic infection. This distinguishes it from other sulfonamides that may have a broader range of indications, including treating toxoplasmosis.

In contrast, sulfamethoxazole, sulfisoxazole, and sulfadiazine are sulfonamides that are more commonly associated with systemic treatment of bacterial infections and can also be used in the management of toxoplasmosis. Sulfamethoxazole is often part of the combination drug trimethoprim-sulfamethoxazole, which is used for various infections and also effective against certain parasitic infections like toxoplasmosis. Sulfisoxazole has similar applications, and sulfadiazine is well-known for its role in treating toxoplasmosis, particularly in immunocompromised individuals. This highlights the specificity of sulfacetamide in treating localized bacterial infections rather than broader systemic infections or parasitic conditions.