PARIS, May 10 (Reuters) - Sanofi on Friday announced it has reached a 'co-exclusive' licensing agreement with Novavax to sell a stand-alone COVID-19 vaccine and develop new flu-COVID-19 combination vaccines.

"We're excited by the prospect of combining Novavax's adjuvanted COVID-19 vaccine that has shown high efficacy and favorable tolerability, with our rich portfolio of differentiated flu vaccines (...)", Sanofi's head of vaccines R&D, Jean-Francois Toussaint, said in a statement. (Reporting by Tassilo Hummel; Editing by Benoit Van Overstraeten)