India postponed exams for trainee doctors and nurses on May 3, freeing them up to fight the world’s biggest surge in coronavirus infections, as the health system crumbles under the weight of new cases and hospitals run out of beds and oxygen.

India’s daily Covid-19 shots fell sharply from an all-time high reached in early April as domestic companies struggle to boost supplies and imports are limited, even as the country fights the world’s worst surge in infections. Pfizer said on May 3 the company was in discussions with the Indian government seeking an “expedited approval pathway” for its vaccine.

U.S. drugmaker Merck & Co. joined Gilead Sciences Inc. on April 27 in lending support to India as the world’s second-most populous country scrambles to address drug shortages and bring a raging new wave of Covid-19 cases under control.

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.