Crossword Genius

Tropical disease that may make one feel very low (6,5)

Ross

I believe the answer is:

yellow fever

I'm a little stuck... Click here to teach me more about this clue!

'tropical disease' is the definition.
'yellow fever' can be an answer for 'disease' (yellow fever is a kind of disease). I am not certain of the 'tropical' bit.

'may make one feel very low' is the wordplay.
'feel very low' anagrams to 'YELLOW FEVER'.
Though, I'm not clear how the anagram is indicated.

'that' acts as a link.

Can you help me to learn more?

I've seen this clue in The Globe and Mail and The Irish News.
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