I'm not disputing whether this article and the woman's issue is her religiosity. I was recalling my own experiences with HIV/AIDS clients. I've seen levels of denial that are astounding. One client, I worked with, refused to believe that he was infected. He often stated "it must be the vitamin I've been taking lately." Ignorance and denial combined can be dangerous as you can see from this article.
I don't believe it is exclusively a dub problem but is common in among those with a limited education. There are many communities that are ignorant of medical options.