Germ theory was also pretty new at the time and not something most working class people would know about, nor did Mary have symptoms.
Contrary to today, germ theory is taught in elementary schools and is well understood by basically everyone. And this woman was clearly experiencing symptoms bad enough to require an ER visit! Visiting the ER likely also means that most of the common religious reasons such as being a Christian Scientist are out the window.
At a certain point it becomes willful negligence and not ignorance.
Contrary to today, germ theory is taught in elementary schools and is well understood by basically everyone. And this woman was clearly experiencing symptoms bad enough to require an ER visit! Visiting the ER likely also means that most of the common religious reasons such as being a Christian Scientist are out the window.
At a certain point it becomes willful negligence and not ignorance.