Cheek-by-jowl

For those on the lower rungs of the economic ladder, cheek-by-jowl living is the grim reality and staying two meters apart is not an option.

Source: tatoeba (11455151)

As we drove at breakneck speed through the streets, I could not help but be overwhelmed by the gaunt and desperate faces of the people, the endless squatter settlements of cheek-by-jowl, single-room shacks surrounded by ankle-deep mud, and the occasional glimpses of the rich apparently oblivious to the suffering around them.

Source: wiktionary

The cells here take advantage of the cheek-by-jowl situations prevailing in tissues and make their Circus connections right at the points of contact.

Source: wiktionary

Notorious among these was the 'Slap-Up', a cheek-by-jowl community of 2,000 people sited to the west of town.

Source: wiktionary