Biden: Trump administration’s behavior during transition is “nothing short of irresponsibility”; Officials: bomber killed in explosion, motive still unknown; TSA: 1.3 million people passed through airports Sunday; Novavax vaccine staring phase 3 clinical trials;

Biden: transition team “encountered roadblocks” from Trump admin; VP-elect Harris, husband to get COVID vaccine tomorrow; Trump backs down, signs COVID relief bill and avoids shutdown; Trump golfs as pandemic worsens and congress feuds over stimulus checks; Trump’s delay could prevent Americans from getting aid this week; House expected to vote today on $2000 stimulus checks; Soon, house could override Trump veto of defense bill; GOP election challenges could cause chaos in congress next week; GOP leaders hope to avoid messy fight over election results;

At least 8 treated at hospital, 40+ buildings damaged; New video shows moment of massive explosion;

Fauci warns pandemic “might actually get worse”; More than two million vaccines administered so far in U.S.;

Novavax becomes fifth to begin phase 3 trials in U.S.; Novavax trial funded with up to $1.6 billion from operation warp speed; WA nursing home at center of COVID outbreak begins vaccinating staff; New Yorker piece dives into “plague year” tragedies;

Admin official: COVID relief checks could start going out this week;

53-year old Georgia teacher dies of coronavirus on Christmas Day;

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