Michael Deem has done a crackerjack job of cutting through the nonsense of combox Catholicism, right wing lies, paranoid conspiracy theory, and sheer quackery to lay out the actual teaching of the Church concerning COVID vaccination (spoiler alert: get vaccinated as soon as you can unless you have some medical condition that prohibits it. There is no teaching of the Church that forbids a healthy person to get vaccinated and there is, in fact, a moral imperative of love of neighbor that requires it barring medical peril to oneself).
The CDF’s Note on the Morality of Using Some Anti-COVID-19 Vaccines and the USCCB’s Moral Considerations Regarding the New COVID-19 Vaccines align in the guidance they provide to Catholics.
Acceptance of the COVID-19 vaccines developed, researched, or tested utilizing fetal cell lines is morally permissible when no alternative COVID-19 vaccine is available or accessible.
Acceptance of these COVID-19 vaccine involves very remote material cooperation in the twofold evils of the abortions of the fetuses from whom tissue was posthumously taken to derive cell strains for medical research.
An action that involves remote cooperation in evil is permissible, or even encouraged, when there are grave moral reasons that are proportional to or outweigh moral badness of this cooperation.
The proportional moral reasons for acceptance of the vaccine are the promotion of community health and prevention of serious risk of harm, which are grounded in the fundamental moral and social principle of the common good.
It is permissible to refuse the COVID-19 vaccine, but those who refuse should perform additional actions that promote community health and prevention of serious harm.
While accepting the vaccine is a morally responsible action, recipients nonetheless have an obligation to protest the use of fetal cell lines in vaccine development.
“But what about the fifty million things I have read on comboxes and from Right Wing Catholic Folk Heroes calling me a babykilling fiend, or warning that I am cooperating with evil or telling me this is all part of a plot or otherwise filling me with fear that I am somehow sinning or something?
That is precisely what this article, which you should read in its entirety, discusses in detail, and brings great peace as it does. Be not afraid. Learn the Faith and do not let the enemy fill you with fear over nothing. The fruit of the Spirit is peace. Be at peace and get your vaccination.