Dec. 31 (UPI) -- Wisconsin health officials say they were forced to throw out hundreds of doses of a coronavirus vaccine recently after a health worker intentionally spoiled them.

Dec. 31 (UPI) -- Samuel Little, the man regarded by many in law enforcement as the deadliest serial killer in U.S. history, has died at a California hospital at the age of 80.

Dec. 31 (UPI) -- The first New Year's Eve of the coronavirus era begins on Thursday morning with pared-down celebration at Sydney Harbor in Australia and will continue throughout the day at other locations worldwide.

Dec. 31 (UPI) -- President Donald Trump is expected cut short his vacation in Florida over the winter holiday to return to the White House on Thursday.

Dec. 31 (UPI) -- The Trump administration has imposed sanctions against a Venezuelan judge and prosecutor for their rules in last month's sentencing of six U.S. oil executives known as the Citgo 6.

Dec. 30 (UPI) -- Health officials in San Diego County confirmed Wednesday that a 30-year-old man has tested positive for a new variant of COVID-19 that was first detected in the United States a day prior.

Dec. 30 (UPI) -- President Donald Trump's pardon last week of four former Blackwater Worldwide military contractors convicted of killing 14 Iraqis in 2007 violates U.S. obligations under international law, the United Nations said.

Dec. 30 (UPI) -- Michigan Gov. Gretchen Whitmer signed two bills into law on Wednesday approving the establishment of a $641 million trust fund to deliver settlement money to residents affected by the Flint water crisis.

Dec. 30 (UPI) -- The U.S. Census Bureau on Wednesday said it will deliver data used to allocate seats on the House of Representatives to states in early 2021, missing its deadline of Dec. 31.

Dec. 30 (UPI) -- New Hampshire Gov. Chris Sununu canceled the state's outdoor inaugural ceremony due to armed protesters that have gathered outside of his home in opposition to an order requiring masks in public settings.

Dec. 30 (UPI) -- President Donald Trump extended a halt on new green cards and other work visas into March after it was originally set to expire Thursday.

A storm brewing at the end of 2020 in Texas and northern Mexico with snow, ice and rain has eyes for the northeastern United States.

Dec. 30 (UPI) -- Aviation officials issued a temporary ground stop for all flights into and out of Dallas' two largest airports Wednesday due to a combination of factors including COVID-19 and severe thunderstorms.

Dec. 30 (UPI) -- President-elect Joe Biden on Wednesday appointed or nominated several officials to the Defense Department and White House team.