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To the Editor:—
Mayor LaGuardia's public proclamation urges substitution of grade B for grade A milk to combat the high cost of the de luxe product. Two issues are involved: cost and quality. Economy is a great revenue to thrifty adults but a selective virtue to helpless infants. Grade A milk is still the most economical food for infant nutrition when compared with the total cost of equivalent nutrients. If it can be made available at less cost, so much the better. Until then, superior milk should remain the choice for infant feeding.Grade A is preferable to grade B milk for infants because of superior bacteriologic control. The former averages about 50,000 bacteria per cubic centimeter before pasteurization while the latter averages about 250,000 per cubic centimeter. The bacterial count of milk is an index of the sanitary quality. Although milk with a high bacterial count is not necessarily
Kugelmass IN. GRADE A VERSUS GRADE B MILK IN NEW YORK CITY. JAMA. 1940;114(9):821. doi:https://doi.org/10.1001/jama.1940.02810090099025
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