Thailand reported 1,390 new coronavirus cases, slowing slightly after a run of record daily highs, amid a new wave of infections that has seen a third of the country's cases recorded this month alone.

The new infections were down by a fifth from Sunday's record 1,767 cases, which the coronavirus taskforce said was due to measures to control the spread and requests for people to avoid travel and gatherings.

“Measures we have introduced for next two weeks will reduce cases, travel and risky activities,” Apisamai Srirangsan, a spokeswoman for the taskforce, told a briefing. Three new deaths were reported, taking total fatalities to 104.

Thailand's third wave of infections is its most challenging so far, reaching all 77 of its provinces as the country celebrated a long holiday.