Reply #4: Not so. Most vaccines are against viruses, but there are a few [View All]

[kestrel91316]

against bacteria. They are called bacterins. They tend to be more problematic than viral vaccines due to increased risk of side effects and decreased immune response. We don't vaccinate against bacterial disease for the most part because we have ANTIBIOTICS to treat the diseases, unlike viruses (until recently, there WERE no safe, effective antiviral drugs, so vaccines were all we had against them).

http://www.use.hcn.com.au/subject.%60Bacterial%20Vaccines%60/home.html

Actually, I was wrong. BCG is the Tb vaccine, but we don't see it used in the US. It causes the person to test positive for TB on the skin test, which is highly undesirable.