Justice Clarence Thomas wrote that Covid-19 vaccines are “developed using cell lines derived from aborted children” in a dissenting opinion to the Supreme Court’s refusal to hear a challenge to New York’s vaccine mandate for health care workers on Thursday. “They object on religious grounds to all available COVID–19 vaccines because they were developed using cell lines derived from aborted children,” Thomas wrote. The conservative justice was joined by Justices Samuel Alito and Neil Gorsuch. Pfizer and Moderna did use fetal cell lines early on in production and testing which is a common practi…