The International Atomic Energy Agency (IAEA) will provide diagnostic kits, equipment and training to countries that need help tackling the worldwide spread of COVID-19.
Fourteen countries in Africa, Asia, Latin America and the Caribbean have asked for assistance so far.
The nuclear-based detection technique can help diagnose coronavirus accurately within hours in humans, as well as in animals that may also host it.
The first training course will take place in Austria in two weeks’ time and for international medical and veterinary experts from Cambodia, Republic of Congo, Cote d´Ivoire, Ethiopia, Kenya, Madagascar, Malaysia, Mongolia, Philippines, Sri Lanka, Thailand and Vietnam.
Additional regional courses will be organised for other countries, including from Latin America and the Caribbean.
Cardinals are scheduled to meet on Tuesday to plan Pope Francis' funeral, which leaders from around the world will attend ahead of a conclave next month to elect a new head of the Roman Catholic Church.
Russian President Vladimir Putin proposed on Monday bilateral talks with Ukraine for the first time since the early days of the war, and his Ukrainian counterpart Volodymyr Zelenskyy said Kyiv was eager to discuss a halt to attacks on civilian targets.
Ukraine issued air raid alerts for Kyiv and the country's eastern half as blasts shook the city of Mykolaiv early on Monday, authorities said, hours after the one-day Easter ceasefire declared by Russian President Vladimir Putin came to an end.
US Vice President JD Vance began a four-day visit to India on Monday and will hold talks with Prime Minister Narendra Modi, as New Delhi rushes to avoid steep US tariffs with an early trade deal and boost ties with the Trump administration.