Insurance broker Willis Towers Watson (WLTW.O) on Friday estimated general insurance losses between $32 billion and $80 billion across key classes in the United States and UK from the novel coronavirus, surpassing claims from the 9/11 attacks.

A report by the broker showed early estimates for U.S. and UK business interruption, contingency, U.S. Directors & Officers, U.S. employment practices, liability, U.S. general liability, U.S. mortgage, trade credit and surety and U.S. workers’ compensation.

An “optimistic” scenario or a return to a pre-COVID-19 state following 3 months of social distancing, would mean $11 billion of insured losses, while a “moderate” scenario, a gradual return following 6 months of social distancing, would mean a bill of $32 billion to insurers.