Drug company Hoffmann-La Roche (OTCMKTS – RHHBY) bilked U.S. federal and state governments out of $1.5 billion by misrepresenting clinical studies and falsely claiming that its well-known influenza medicine Tamiflu was effective at containing potential pandemics, according to a recently unsealed whistleblower lawsuit. The lawsuit claims the drugmaker’s scheme involved publishing misleading articles falsely stating that Tamiflu reduces complications, severity, hospitalizations,…