What is the most important strategy to prevent the spread of drug-resistant TB?

What is the most important strategy to prevent the spread of drug-resistant TB?

• A. Direct observation therapy with five different medications
• B. Self-administered therapy
• C. Shorter regimen with one drug
• D. Isolating patients without treatment

Answer: (A)

Ensuring adherence to a multidrug TB regimen under direct supervision is the most effective way to prevent the spread of drug-resistant TB. TB develops resistance when medications are not taken consistently, allowing the bacteria to adapt. Directly observed therapy guarantees that each dose is taken as prescribed, reduces missed doses, and helps shorten the infectious period by guiding patients to cure faster with a regimen that uses multiple drugs. A short course with a single drug is inadequate because the bacteria quickly become resistant to that agent, making treatment far more difficult and lengthy. Self-administered therapy often leads to incomplete treatment, increasing resistance risk. Isolating patients without treatment leaves them infectious and does not cure the disease or prevent resistance.

Ensuring adherence to a multidrug TB regimen under direct supervision is the most effective way to prevent the spread of drug-resistant TB. TB develops resistance when medications are not taken consistently, allowing the bacteria to adapt. Directly observed therapy guarantees that each dose is taken as prescribed, reduces missed doses, and helps shorten the infectious period by guiding patients to cure faster with a regimen that uses multiple drugs. A short course with a single drug is inadequate because the bacteria quickly become resistant to that agent, making treatment far more difficult and lengthy. Self-administered therapy often leads to incomplete treatment, increasing resistance risk. Isolating patients without treatment leaves them infectious and does not cure the disease or prevent resistance.