"Addressing Concerns for Catholics: *Catholic US bishops approve use of COVID-19 vaccines with ‘remote connection’ to abortion *“…as regards the vaccines [containing WI-38 or MRC-5] without an alternative, the need to contest so that others may be prepared must be reaffirmed, as should be the lawfulness of using the former in the meantime insomuch as is necessary in order to avoid a serious risk not only for one’s own children but also, and perhaps more specifically, for the health conditions of the population as a whole – especially for pregnant women.” 2005 Official Document, Moral Reflections on Vaccines Derived from Aborted Human Foetuses *“danger to the health of children could permit parents to use a vaccine which was developed using cell lines of illicit origin, while keeping in mind that everyone has the duty to make known their disagreement and to ask that their healthcare system make other types of vaccines available.” 2008 Instruction Dignitas Personae on Certain Bioethical Questions [link to complete text – near the end of section 35]"