The chairman of the US bishops’ pro-life committee has said that while Catholics may accept a Covid vaccine developed using fetal cells, they are not obligated to do so. Responding to a Vatican statement that the use of the Covid vaccines is morally acceptable, Archbishop Joseph Naumann added that “not everyone has to make that decision.” The archbishop added that those who do take the vaccine are “even more obligated” to express a protest at the use of fetal cells.