The most common and most likely answer to this crossword clue is the 4 plus 3 letter word BIRD FLU
B
I
R
D
F
L
U
More clues leading to the result BIRD FLU
- Complaint, as Charlie Parker hurriedly withdrew broadcast
- Disease: could it be linked to thrush? (4,3]
- Time went fast, they say; it’s sickening
- Flier reportedly did what he could for infection
- Prison sentence passed quickly — that said, it’s a strain
- Migrant perhaps said to have travelled with disease
- Girl said to have disappeared in virus outbreak
- ... bad to start, fluid collection overcoming resistance leads to disease
Buddy explains!
The straight part
We know that "disease" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case disease = bird flu.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.