The government on Friday reported 50 new local cases of Covid-19, raising the total to 2,473 over 68 provinces, and one new death, increasing the toll to 33.

Dr Taweesin Visanuyothin, spokesman for the Centre for Covid-19 Situation Administration, said the dead woman was a vendor who suffered from lupus.

"The woman was already in shock on her arrival at the hospital... The case was not old, but her immune system was weak. So when she was infected, her symptoms were severe. Relatives must take good care of people with weak immunity," he said.

The spokesman said people aged 20-29 remained the biggest group of local Covid-19 cases because they worked and commuted and were at high risk of catching the disease and transmitting it to family members.

The 50 new cases included 27 people in close contact with previous patients. Most of them, 11, were in Bangkok, followed by seven in Yala province.

Others were five people working in crowded places or close to foreigners, four medical staff, three returnees and three visitors to crowded places. Eight others were under investigation.