How many diseases are prevented by vaccines?

Why do we learn how to calculate the distance of a parabola in 10th grade but not what a 401k is?

If scientists are trying to use what they know about hsv to devise a means of protecting other people from being infected, which of the following would have the best chance of lowering the number of new cases of infection? a) vaccinate of all persons with preexisting cases of hsvb) interfere with new viral replication in preexisting cases of hsvc) treat hsv lesions to shorten the breakoutd) educate people about avoiding sources of infection

Explain what you know about the cause of mental illnesses.