Biology discussion

1.

Several decades ago parents would have done almost anything to get a protective vaccine against measles for their children.

Now parents fear the vaccine, not the disease. Why?

2.

In what ways might it be argued that the widespread commercial use of antiseptics and disinfectants has hurt rather than helped American health?

3.

Prescription antacids are useful for treating peptic ulcers and allowing stomach lining time t0 heal. Antacids, however, can actually increase the risk of contracting other bacterial and viral gastrointestinal diseases. How?