Imperfections.
Imperfections and failures of structure, of connections.
The breaking of connections. Connections between family members, between neighbors, between citizens of various political entities from the city to the nation and beyond those even, if you include trade agreements and the EU.
Virus means "poison" in Latin, but "acid" would be a better analogy of the virus that is currently making life miserable for us humans. It is eating through the ties that bind us into functioning communities, entities, life forms. Now we're locked in our own homes, like beads in a box, without a thread from them to be strung upon, easy pickings for hungry, short-sighted birds.
The Vikings referred to battle as "feeding the ravens", as the shiny black scavengers would strip the flesh from the dead warriors for their repast. Now we usually get our dead buried before the scavengers appear---the feathered and four-legged ones, anyway.