WASHINGTON — President-elect Joseph R. Biden Jr. on Thursday is expected to outline proposals for trillions of dollars in government spending to combat the coronavirus pandemic and its effects on the economy, with an initial focus on large-scale expansions of the nation’s vaccination program and virus testing capacity.Mr. Biden will detail his plans, which he and his economic team have been honing for weeks, in an evening speech in Delaware. The efforts will cover the pandemic, the economy, health care, education, climate change and other domestic priorities, Brian Deese, the incoming director of the National Economic Council, said at …
