Which public health campaign against tuberculosis began in the early 1900s?

The campaign improving sanitary practices and vaccination is the correct answer because it reflects the primary public health measures adopted in the early 1900s to combat tuberculosis (TB). During this period, tuberculosis was a major public health crisis, and understanding its transmission led to significant efforts focused on improving sanitary conditions as a means to reduce the spread of the disease. These included initiatives to ensure better nutrition, housing, and general living conditions, which were believed to lower the incidence of tuberculosis.

Vaccination efforts also began in this timeframe, specifically with the development of the BCG vaccine in the 1920s, aimed at providing immunity against this infectious disease. The combination of promoting hygiene and establishing vaccination protocols was crucial in the public health strategy to reduce the prevalence and mortality associated with tuberculosis.

Other choices do not directly address the context of public health campaigns specifically targeting tuberculosis in the early 1900s. For instance, while advanced medical equipment and research funding are important facets of healthcare development, they do not primarily represent campaigns dedicated to fighting TB. Postal health awareness lacked the focus and direct action needed to make an impact against the disease during that critical time. Therefore, the combination of improving sanitary practices and vaccination represents the core efforts employed during the early 20th century against