Syringes with needles are seen in front of a displayed Novavax logo in this illustration taken, November 27, 2021. REUTERS/Dado Ruvic/Illustration NEW YORK, Feb 28 (Reuters) – COVID-19 vaccine maker Novavax Inc (NVAX.O) on Tuesday raised doubts about its ability to remain in business and announced plans to slash spending as it works to prepare for a fall vaccination campaign. The company said there is significant uncertainty around its 2023 revenue, funding from the U.S. government, and pending arbitration with global vaccine alliance GAVI. But its cash flow forecast indicates it has sufficient capital to fund operations over the next year. Advertisement · Scroll to continue The company lost $182 million, or $2.28 per share, in the fourth quarter on weaker-than-expected sales of $357 million. Analysts had expected sales of $383 million, according to Refinitiv data. Register for free to Reuters and know the full story Novavax shares fell over 20% in after-the bell trading. "If we execute on our operating plan, we’ll be in a very strong position not only at the end of this year, but going into next year," Novavax’s new Chief Executive John Jacobs, who joined the company in late January, said in an interview. […]