The second Omicron-related death has been recorded in Thailand, of an 84-year-old unvaccinated woman with cancer.

A spokeswoman for the Centre for Covid-19 Situation Administration said on Monday that the woman died in Udon Thani on Saturday.

Her son first tested positive for Covid-19. She showed no symptoms, but her family had her tested for the disease on Jan 9, and it was positive.

Health officials recommended her admission to hospital but relatives rejected that and also denied the use of a ventilator. The woman died on Saturday.

The first Omicron-related fatality was also an old woman, an 86-year-old in Hat Yai district, the spokeswoman said. She was bed-ridden and suffered from Alzheimer's disease, and died last Wednesday.

The spokeswoman said both fatalities were elderly and had chronic diseases. The woman in Songkhla had previously received two doses of Covid-19 vaccine, but the second dose was more than four months ago.

The most recent, second Omicron fatality had not been vaccinated.

The CCSA recommended that people in households where old people are present observe distancing and wear face masks, and keep personal belongings separate and use separate toilets if at all possible.