Looks like Moyashimon earned its creator 2 million yen in prize money:
The Asahi Shimbun paper announced the winners for the 12th Annual Tezuka Osamu Cultural Prize on Saturday. Masayuki Ishikawa won the 2-million-yen (about US$20,000) Manga Grand Prize for his Moyashimon medical comedy manga. The manga follows a college student who discovers that he can see and communicate with the germs all around him â€” germs that appear as super-deformed characters.
This is definitely on my towatch list.