The swill milk scandal is about adulterated milk. Producers, using cheap distillery by-products and diluted milk, added substances to disguise poor quality and boost quantity. Flour was used to thicken, chalk to whiten, and even eggs were added to alter texture and richness, resulting in a yellowish, watery milk that wasn’t truly milk. This description matches the option that describes yellowish, watery milk thickened with flour, eggs, and chalk. The other descriptions reflect spoiled or natural milk, not the deliberate adulteration practiced in the scandal.

There isn’t a single, worldwide PMO that coordinates disease elimination for every country. Global health work relies on multiple international bodies (like WHO and other agencies) to provide guidelines and standards, but implementation and enforcement are left to individual countries and regional programs. Because of this decentralized approach, only a small number of disease elimination efforts are adopted uniformly across many nations, so there isn’t a universal, globally followed elimination program. That’s why the statement is true.

Focusing on how large-scale disease eradication shapes veterinary services helps connect the dots. The campaign to eliminate Mycobacterium bovis, which causes bovine tuberculosis, created a powerful incentive to build organized veterinary public health systems worldwide. Eradicating this pathogen required nationwide herd testing, rigorous movement controls, traceability, culling of infected animals, and coordinated reporting and outbreak response. To carry out these measures, governments needed trained veterinary professionals, diagnostic laboratories, and public health infrastructure that could oversee animal health and connect it to human health, especially since milk can transmit the infection to people. That combination of surveillance, regulation, and milk-safety needs drove the expansion of veterinary services on a global scale. While campaigns against other pathogens like Brucella abortus and issues around mastitis or Listeria are important for animal and food safety, the global push that most substantially spurred the establishment of veterinary services worldwide was the effort to eradicate bovine tuberculosis caused by M. bovis.

Milk can harbor pathogens when it comes from infected animals or is mishandled, especially if consumed raw. Historically, unpasteurized milk transmitted bovine tuberculosis caused by Mycobacterium bovis, and it also spread brucellosis from Brucella species. In addition, diarrheal illnesses have been linked to contaminated milk through enteric pathogens such as Salmonella, Campylobacter, and certain E. coli strains. Because milk has been a vehicle for all of these categories of disease, the option that includes all of the above is the best choice. Pasteurization and proper dairy hygiene dramatically reduce these risks by killing or inactivating the organisms.