A U.S. Centers for Disease Control and Prevention study found that 2020 was the deadliest in U.S. history, with Covid-19 helping to drive a 15 percent increase in deaths, Politico reported on March 10, citing sources.

Worldwide coronavirus cases surpassed 90 million on Jan. 11, according to a Reuters tally, as nations around the globe scramble to procure vaccines and continue to extend or reinstate lockdowns to fight new coronavirus variants.

The U.S. Centers for Disease Control and Prevention on Dec. 27 reported 18,909,910 cases of new coronavirus, an increase of 179,104 cases from the CDC’s previous count, and said deaths rose by 1,309 to 330,901.

Global coronavirus infections surpassed the 75 million mark on Dec. 19, according to a Reuters tally, as several nations around the world begin vaccinating against the virus.

U.S. coronavirus cases crossed the 15 million mark on Dec. 8 as regulators moved a step closer to approving a Covid-19 vaccine and Britain started inoculating people, offering hope of slowing a pandemic that killed 15,000 Americans in the previous week.

California shattered records for coronavirus cases on Dec. 6 as U.S. states scrambled to impose lockdowns to stem spikes in infections and the White House’s task force coordinator decried a lack of national leadership on curbing the disease.

The United States entered the final month of 2020 with expectations that promising vaccine candidates will soon be approved to halt the rapidly spreading coronavirus after 4.2 million new cases were reported in November.

The global tally of confirmed coronavirus cases hit 60 million on Nov. 25, with the pace of new infections accelerating and the United States reporting record numbers of hospitalizations, according to a Reuters tally.

U.S. health officials and politicians pleaded with Americans to stay at home over the Thanksgiving holiday and abide by constraints placed on social and economic life as record coronavirus caseloads pushed hospitals to their limits.

The number of Covid-19 deaths in the United States crossed 250,000, according to a Reuters tally, as a third coronavirus wave brings a fresh surge in infections and puts immense strain on the healthcare system.