The rating reflects Sanofi's leading positions in vaccines, anti-diabetics and rare diseases within a credit-supportive underlying industry as well as the strong recovery for credit metrics expected by rating agency.

The rating reflects our view of Sanofi's credit metrics' recovery to levels commensurate with the ratings following their temporary deterioration following the acquisitions of Bioverativ and Ablynx in the first half of 2018.

Scope believes that the recently announced USD 11.6 bn acquisition of US-based biotech company Bioverativ is not a challenge for Sanofi’s credit rating.

Scope’s first ratings for Sanofi S.A. are driven by the French group’s credit-supportive industry risk, strong competitive position and sustained track record of good credit metrics. Senior unsecured debt is rated AA.