1918 A. Huxley 25 Nov. (1969) 171 The whiskey bottle seems the only refuge from that post-flu depression.
1971 P. D. James v. 163 She had post-flu depression and she felt she couldn't cope with the baby.
2004 (Nexis) 16 Nov. 1 e For each day you were in bed with the flu, your post-flu resistance is lower for three days.