To the Editor: —Will you give me space inThe Journalin which to protest against the still too frequent use of "shields" in covering vaccination wounds? In routine vaccination work it has recently been my lot to examine many arms, a number of which I have dressed after the persons had applied shields, on their own initiative, or often on the advice of some physician. Others, having large, ugly cicatricial evidence of former pyogenic infection, too frequently give a history of having worn shields. I have removed shields and have seen a collection of accumulated pus roll down the arm, the patient thinking this a natural result of the "take." Shields are usually perforated for supposed ventilation, the perforation in reality serving to admit germ-laden dust and dirt of various kinds. The shield prevents cleansing of the wound, and gives the patient a false sense of proper protection. There