Britain's AstraZeneca said good data was coming in on its vaccine for COVID-19.
"The vaccine development is progressing well. We have had good data so far. We need to show the efficacy in the clinical programme, but so far, so good," Chief Executive Pascal Soriot said on a media call.
AstraZeneca has already reached deals with countries to make more than 2 billion doses of its COVID-19 vaccine, developed in partnership with the University of Oxford, and says it could be approved by the end of this year.
The company has had a busy few months - it took on development of the COVID-19 shot, received billions in government funding, signed several supply deals, and was even the subject of a mega-merger speculation - all while marching on with its core business.
There are no approved vaccines for the illness caused by the new virus, but AstraZeneca's shot is widely considered the leading candidate after results from early-stage human trials showed it was safe and produced an immune response.
The drugmaker also announced second-quarter results that beat its sales and profit estimates, thanks to its diverse product line-up.
The US military said on Monday it destroyed six Iranian small boats and intercepted Iranian cruise missiles and drones as Tehran sought to thwart a new US naval effort to open shipping through the Strait of Hormuz.
Two cases of the deadly hantavirus have been confirmed, and five more are suspected among people who were on a luxury cruise ship now held in the Atlantic near Cape Verde, the World Health Organisation said in its most detailed update on the outbreak.
President Vladimir Putin has declared on Monday a two-day ceasefire in the conflict with Ukraine on May 8-9 to mark Russia’s World War Two victory, but Ukrainian President Volodymyr Zelenskyy countered with his own proposed pause in fighting starting earlier, on the night of May 5‑6.
A blast at a fireworks factory in China has killed at least 26 people and injured 61, flattening buildings and sending towering clouds of smoke into the sky, and prompting President Xi Jinping to order a thorough investigation, state media reported on Tuesday.
A small airplane with five occupants crashed into a building on Monday in the city of Belo Horizonte in southeastern Brazil, killing three people, local officials and firefighters said.