New Jersey on Monday reported 1,223 COVID-19 confirmed positive tests and two new confirmed deaths as federal officials signaled that smaller doses of Pfizer’s COVID-19 vaccines appear to be safe and effective for children under 5. The availability of vaccines for younger children would be key toward a long-awaited decision to begin vaccinating the youngest American children. The Food and Drug Administration announced its latest analysis of the Pfizer vaccine ahead of a Wednesday meeting where outside experts will vote on whether the shots are ready for the nation’s 18 million babies, toddlers…