Actor Jason Alexander plays a guardian angel in the new Sanofi and American Nurses Association's 'Not Today, Flu' campaign
'Not Today, Flu': Sanofi enlists Seinfeld star Jason Alexander to boost flu vaccinations this fall
“Seinfeld” actor Jason Alexander takes a turn as a guardian angel in a new Sanofi campaign to encourage flu vaccinations.
Known for his funny, offbeat …
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