Basic and Clinical Sciences (BCSE) Practice Exam

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What has contributed to the decline in tuberculosis (TB) incidence?

  1. Improved vaccination programs

  2. Improved living conditions

  3. Increased antibiotic resistance

  4. Widespread public health campaigns

The correct answer is: Improved living conditions

The decline in tuberculosis (TB) incidence can primarily be attributed to improved living conditions. This encompasses a range of factors including better nutrition, enhanced housing, increased access to healthcare, and improved sanitation. Such factors contribute to a stronger immune system among individuals, making them less susceptible to infections like TB. Additionally, addressing social determinants of health plays a crucial role in controlling the spread of TB, as overcrowded and unsanitary living conditions are significant risk factors for the transmission of the disease. While improved vaccination programs and widespread public health campaigns have certainly played a role in reducing TB incidence as well, the foundational aspect that allows these programs to be effective is the underlying improvement in living conditions that helps to lower transmission rates and support overall public health. Increased antibiotic resistance, on the other hand, poses a challenge to TB control efforts rather than contributing to the decline in incidence. Thus, focusing on the improvements in living conditions highlights an essential aspect of public health that underpins the success of TB prevention and control strategies.