πανδημία
From LSJ
ἀσκέειν, περὶ τὰ νουσήματα, δύο, ὠφελέειν, ἢ μὴ βλάπτειν → strive, with regard to diseases, for two things — to do good, or to do no harm | as to diseases, make a habit of two things — to help, or at least, to do no harm
English (LSJ)
ἡ,
A the whole people, π. ἐξάγειν Pl.Lg.829b; π. καθιστάναι, of Theseus in Attica, Arist.Fr.384, Plu.Thes.25; πανδημίᾳ, as Adv., = πανδημεί, A.Supp. 607.