Laredo ISD weighing vaccines for middle schoolers after report of Pfizer success April 6, 2021 FacebookTwitterEmail 1of3 LISD healthcare professionals work to administer the COVID-19 vaccine Monday, Feb. 1 at Martin High School. Vaccines were administered to 124 staff members and 200 students 18 or older.Danny Zaragoza / Laredo Morning TimesShow MoreShow Less 2of3 LISD Health Assistant Marisol Urbina fills a syringe with the COVID-19 vaccine on Monday, Feb. 1 at Martin High School.Danny Zaragoza / Laredo Morning TimesShow MoreShow Less 3of3 After news of the Pfizer COVID-19 vaccine having positive results in children between the ages of 12 and 15, LISD discussed the possibility of moving forward to provide the vaccine to middle school students.