North Dakota became the 35th U.S. state to require face coverings be worn in public, as governors across the country grapple with a surge in coronavirus infections that threatens to swamp their healthcare systems.

The likelihood that a coronavirus infection will prove fatal dropped by nearly a third since April due to improved treatment, researchers at the University of Washington’s Institute for Health Metrics and Evaluation (IHME) said.

Chicago’s mayor issued a month-long stay-at-home advisory, and Detroit’s public schools called a halt to in-person instruction to curb the spread of the coronavirus as more than a dozen U.S. states reported a doubling of new Covid-19 cases in the last two weeks.

U.S. coronavirus cases crossed the 9 million mark, rising by 1 million in two weeks as the world’s worst-affected country faces a resurgence in the pandemic just ahead of elections.

Although it’s increasingly likely that one of the Covid-19 vaccines being tested will be approved or receive Emergency Use Authorization (EUA) before the end of 2020, experts are increasingly warning that widespread distribution may take a much longer time.

U.S. deaths from the coronavirus will reach 410,000 by the end of 2020 and deaths could soar to 3,000 per day in December, the University of Washington’s health institute forecast.

GlaxoSmithKline opened a new $13 million research hub in London focused on artificial intelligence.

The United States surpassed 170,000 coronavirus deaths, according to a Reuters tally, as health officials express concerns over Covid-19 complicating the fall flu season.

Nearly 300,000 Americans could be dead from Covid-19 by Dec. 1, University of Washington health experts forecast, although they said 70,000 lives could be saved if people were scrupulous about wearing masks.

Phase I data from the Covid-19 vaccine under development by AstraZeneca and Oxford University’s Jenner Institute is showing a robust defense against the novel coronavirus that has infected more than 13 million people across the globe.