Dogs do seem to require more medical attention than in the past. The Gardia? and whip worms are fairly common, but usually yield to treatment. Most dog diseases don't spread to people, ring worms being one exception.
Might take a look at ''What does a puppy need?'',
http://www.askmehelpdesk.com/dogs/in...tml#post254171
Post back as more questions come up.