Thailand reported three new cases of coronavirus on Thursday, bringing total cases to 3,037. No additional deaths were recorded, leaving the toll at 56.

The new cases were an elderly Thai man, a German expatriate with a Thai wife and a woman who recently returned from the Philippines. 

Dr Taweesilp Visanuyothin, spokesman for the Centre for Covid-19 Situation Administration, said the Thai man, aged 72, had diabetes and lung cancer. He visited a public hospital four days ago and then went to a barbershop.

"The risk factors for the elderly man with chronic diseases were visits to a hospital and a barber," Dr Taweesilp said.

A second new case is a German man, aged 42, who showed no symptoms and apparently had no underlying health conditions. He lives in Bangkok and visited his Thai wife's house in Chaiyaphum province on April 30-May 16.

On May 8 a relative in Chaiyaphum developed a fever but did not seek a test. The German then visited a shopping centre in Chaiyaphum. Before resuming work in Bangkok on Monday, he had a check-up and tested positive for Covid-19. 

The other new case is a 25-year-old Thai woman who was quarantined after returning from the Philippines on May 13. 

"Thailand has passed through its first wave of the Covid-19 outbreak and since the government imposed the night-time curfew and a business lockdown, the number of daily new cases has been declining," the doctor said.