MILAN, Nov 13 (Reuters) - Italian infrastructure group Atlantia worsened its outlook on Friday, saying the coronavirus would reduce its 2020 revenue by 3.5 billion euros ($4.1 billion) compared with last year.

In August the group had indicated a possible drop in sales due to the pandemic of 3 billion euros.

The group also said that operating cashflow, after capital expenditure, would fall by 2.2 billion euros.

Atlantia is in talks with a consortium led by state-backed investors CDP to sell its 88% stake in motorway unit Autostrade per l'Italia, which came in the crosshairs when the highway bridge it managed in Genoa collapsed in 2018, killing 43 people. ($1 = 0.8455 euros) (Reporting by Francesca Landini; Editing by Crispian Balmer)