Tonight President-elect Joe Biden will deliver a speech from Wilmington, Delaware, where he will outline his administration's plan to tackle the COVID-19 pandemic when he assumes office next week.Sources say the cornerstone of the trillions-dollar effort to fight the virus will be a "100 million vaccines in 100 days" mass vaccination campaign, and a call for Americans to fight pandemic fatigue, wear masks, and physically distance themselves.Vaccinations laggingBy the end of next week, providers will be administering 1 million doses of COVID-19 vaccine per day, but experts say that number needs to increase to 1.8 to 3 million a day if the country plans to each a level of herd immunity by the summer.