Gov. Baker jabs at Moderna, others over vaccine promises

As Massachusetts residents are increasingly frustrated over the state's rocky Covid-19 vaccine distribution, Gov. Charlie Baker has placed the blame squarely on vaccine developers, saying that they have "not delivered" on their promises to ramp up supply. If Pfizer Inc. (NYSE: PFE), Johnson & Johnson (NYSE: JNJ) and Cambridge's Moderna Inc. (Nasdaq: MRNA) had provided adequate supplies of their vaccines, each of which has been authorized for emergency use by the FDA within the last three months,…