Crossword clues for the word: BIRDFLU The word BIRDFLU has appeared as an answer to at least 9 crossword clues on different crossword puzzles. Crossword clues for BIRDFLU Showing 1 to 9 of 9 results Clue(s) "H5N1, familiarly" "Recent virus outbreak also described as ""avian"": 2 wds." Avian ailment? Avian illness Avian influenza H5N1, by another name Infectious illness Modern health concern Time in prison for the locals didn't last long - reportedly, it's a strain on the high-flyers