BANGKOK (REUTERS) - At least 12 hospitals in Thailand's capital, Bangkok, said as at Friday (April 9), they were suspending testing for Covid-19 owing to high demand and shortage of supplies, amid a new spike in cases.

The hospitals issued notices on their social media accounts and on messaging apps this week, some saying the suspension would last only a few days and others giving no date for resumption of tests.

Bangkok is the epicentre of a new outbreak in Thailand that has seen new cases go from only a few dozens per day to several hundreds per day, prompting the government to scramble to boost testing and trace new cases.

The government has been hosting its own mass testing in districts of Bangkok where clusters have been reported, mostly involving bars or entertainment venues that have been ordered closed for two weeks.

Thailand reported 405 new Covid-19 infections on Thursday, and nearly a third of Cabinet ministers are self-isolating because of potential exposure to cases.

The spike in infections comes at a tricky time for Thailand, ahead of next week's annual Songkran festival, known for big gatherings and notoriously crowded water fights that the authorities have banned.

Thailand on Wednesday confirmed the presence locally of the highly transmissible Covid-19 variant B117 first identified in Britain.