WHYY By The first to be vaccinated at the federally-run site in the Pennsylvania Convention Center settle in for 15 minutes in the observation room. The site is designed to provide up to 6,000 vaccines per day. (Emma Lee/WHYY) — FEMA has agreed to keep its COVID-19 vaccine clinic at the Pennsylvania Convention Center in Center City open another four weeks, city health officials said Wednesday. The Convention Center site will give out the two-dose Pfizer vaccine through Wednesday, May 26. The city’s Health Department expects to receive 84,000 doses on Monday to be used through May 5. Another 84,000 doses will be used for second-dose clinics through May 26.