Prime Minister Boris Johnson of Britain has brushed aside advice from an influential group of scientists to lock down the economy for a brief period to try to halt a surge in coronavirus cases.

And what else you need to know today.

The Italian government continued to tighten restrictions in an effort to stem a resurgence in virus cases, announcing on Tuesday a ban on informal amateur contact sports, parties and school trips.

Major news organizations have become increasingly wary of sending journalists to travel with President Trump to White House events and campaign rallies, as the president and his aides continue to shun safety protocols after an outbreak of the virus within their ranks.

The United States may be within months of a profound turning point in the country’s fight against the coronavirus: the first working vaccine.

Tourism is undergoing a downturn all over the world, but several factors make Iceland particularly vulnerable to the industry’s crash: geographic isolation, a small domestic population, strict border measures and an economy that — after an extraordinary, decade-long tourism boom — had come to depend heavily on foreign tourists. A recent surge in coronavirus cases has added to Iceland’s challenges.

When the coronavirus pandemic closed offices around the United States in March, many companies told their employees that it would be a short hiatus.

For Heidi Larson, the founder of the Vaccine Confidence Project, dispelling vaccine hesitancy means building trust — and avoiding the term “anti-vaxxer.”

Here’s what you need to know.

The Polarstern docked at its home port of Bremerhaven nearly 13 months after it left Norway to study the rapidly changing Arctic.