A new outbreak of Covid-19 is growing near Myanmar's northwestern border with India, bringing the sharpest increase in cases since the military coup in February led to a collapse in health services and the testing programme.

Official figures showed 122 cases across the country for the second time in three days — a low number compared with many Asian neighbours, but the highest in nearly four months. Many of the cases are from Chin State, bordering India, raising concerns that the more transmissible variant first found there is now spreading in Myanmar.

"Three people died yesterday alone. Many got scared," Lang Khan Khai from the Zomi Care and Development aid group told Reuters from the town of Tonzang, just over 20 kilometres from the border with India. "People rarely go out."