O χωρίς προηγούμενο, ο πρωτόγνωρος, ο άνευ προηγουμένου.
Βιβλιογραφική Τεκμηρίωση:
The Unprecedented COVID-19 Crisis. Thomas SL.J Nurse Pract. 2020 Apr;16(4):A9.
Unprecedented pandemic, unprecedented shift, and unprecedented opportunity. Yan Z.Hum Behav Emerg Technol. 2020 Apr 6:10.1002/hbe2.192.
The COVID-19 pandemic: an unprecedented tragedy in the battle against childhood obesity. Storz MA.Clin Exp Pediatr. 2020 Dec;63(12):477-482.