Possible Clues:

• Faint with illness after vegetable starter
• As clear as mud
• Like the description 'somewhere in the U.S.'
• Very short time to keep in university, being dim
• Unclear what comes ashore in Nice?
• Indistinct version seen at first, having fever
• Not at all specific
• Lacking precision against malaria?
• Victor fit? It's far from clear
• Rough but very fit