Pfizer shares, which had risen Tuesday morning after improved demand for the Covid vaccine, dropped 2.3% after Kennedy's nomination moved forward.

(Reuters) -Drugmaker Pfizer posted a better than expected fourth quarter profit on Thursday, helped by cost cuts and a smaller-than-feared drop in sales of its COVID-19 vaccine. "Our revenue volatility is largely in the past as COVID-related uncertainties have diminished,

The results cap off a critical year for Pfizer, which has been slashing costs as it recovers from the rapid decline of its Covid business and stock price.

(Reuters) -U.S. drugmaker Pfizer beat Wall Street estimates for fourth-quarter profit on Tuesday, helped by strong sales of its heart disease drug and a smaller-than-feared drop in COVID vaccine sales.