"Consumption" was an old name for tuberculosis. TB is normally transferred through the air, not food contamination.
Raw milk is not generally available to poor urban people today, because farms are no longer near cities. It's mostly consumed in rural or suburban areas, near the source farms. There is no need to ban raw milk with the incredibly small risks associated, compared to the carcinogens in city water, for example. So banning raw milk is essentially an attack on poor and middle class rural people, which is fashionable today.
You only named one risk to raw milk, not the many that exist. Remember, it takes only one sick cow out of a hundred to pass on harmful bacteria. Grass fed cows do not have some magical quality that works as an antibiotic in milk. City water is in fact safer because it is subjected to a similar treatment as pasteurization (Chlorination, Ozone etc). I am not aware of any "carcinogens in city water" or their relative rate of harm compared to unpasteurized milk, so I suspect that is just conjecture.
An example of the bacteria that can be found in cows milk: Brucella, Camplyobacter, Listeria, Mycobacterium bovis, Salmonella and shiga toxin producing E. coli., parasites such as Giardia and viruses such as the norovirus.
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