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.

Vaccine maker Novavax Inc. pushed back the start of a U.S.-based, late-stage trial for the company’s experimental Covid-19 vaccine.

The coronavirus pandemic is accelerating, with Thursday’s 150,000 new cases the highest in a single day and nearly half of those in the Americas, the World Health Organization (WHO) said.

An estimated 6.3 million children died before their 15th birthdays in 2017 – or one every five seconds – mostly due to a lack of water, sanitation, nutrition and basic healthcare, according to report by United Nations agencies.

At least half the world’s population is unable to access essential health services and many others are forced into extreme poverty by having to pay for healthcare they cannot afford, the World Health Organization said.