One area of substantial controversy over the multiple available COVID-19 vaccines is the use of fetal cell lines in their production. Needless to say, those who oppose abortion on moral grounds (as I do), based on the belief that a person is already alive inside the womb before birth (which I hold), are wary of anything that necessarily involves the death of an unborn baby.
For this reason, it is important to understand what is and is not happening, and to be reasonable and consistent in how we think through the matter and apply it to our lives.
In this post, my focus is more on the underlying worldview and moral implications of the use of fetal cell lines in the COVID-19 vaccines than on whether you should get a vaccine. With that said, the application will be in favor of the vaccine (or at least against declining the vaccine due to this particular issue).