In intestinal diseases, the infectious dose of ______ is quite high, while the infectious dose of a Shigella species is lower because ______.
o Salmonella enterica; the cells survive the stomach acid more readily
o Salmonella enterica; the cells can't survive the acidity of the stomach very well cold virus;
o Salmonella enterica; the cells survive much more readily in the nasal passages measles virus;
o Salmonella enterica; the cells survive the stomach acid more readily