As wise travelers fortify themselves against typhoid, so in future purchasers of parrots, parakeets, lovebirds, macaws, may guard against psittacosis (parrot fever). At Yale Medical School last week Dr. Thomas Milton Rivers of Manhattan's Rockefeller Institute announced development of a psittacosis vaccine, prepared from the sputum of recovered psittacosis patients. White mice, monkeys and finally seven of Dr. Rivers' laboratory assistants were vaccinated, proved immune to the disease.
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