Wary Parents Are Target of New Appeals to Vaccinate Children 5-11

For weeks, the school principal had been imploring Kemika Cosey: Would she please allow her children, 7 and 11, to get Covid shots?Ms. Cosey remained firm. A hard no.But Mr. Kip — Brigham Kiplinger, the principal of Garrison Elementary School in Washington, D.C. — swatted away the “no’s.”Ever since the federal government authorized the coronavirus…