Dangers inherent in edible vaccines
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Re “Garden-Variety Vaccines May be Edible Alternative” [April 25]: I don’t understand why scientists continue to engineer food plants to make edible vaccines.
They’ve abandoned their original plan -- to provide the vaccines in a whole food like a tomato or banana -- because doses can’t be controlled. Why don’t they use nontoxic, nonfood plants instead?
The danger remains too great that these potatoes, spinach, etc., will enter the food supply or be planted by curious farmers, hybridizing with food crops. Greenhouses or underground plots do not remove the possibility of innocent or malicious human error.
Danila Oder
Los Angeles
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