Which condition is not treatable once contracted, according to public health information on poliomyelitis?

Poliomyelitis, often referred to simply as polio, is a viral disease that can lead to permanent paralysis and other serious health complications. Once a person contracts poliomyelitis, there is currently no treatment available that can reverse the damage done by the virus or restore function to affected muscles. The primary strategy for managing polio is prevention through vaccination.

In contrast, the other conditions mentioned—measles, diphtheria, and tuberculosis—can be treated once contracted, typically with various forms of medication, vaccines, or antibiotics. For example, measles can often be managed with supportive care, and vaccines are highly effective in preventing it. Diphtheria can be treated with antitoxin and antibiotics. Tuberculosis is treatable with a course of antibiotics over an extended period.

This distinction emphasizes the critical importance of vaccination programs and public health measures that aim to prevent the spread of poliomyelitis, as the condition itself is associated with significant morbidity and is irreversible once contracted.