Kobsak urges govt to curb a 4th wave 12 Fourth wave to have drastic effect on GDP published : 11 May 2021 at 04:02 12 People wait to be inoculated with a Covid-19 vaccine at the Holy Redeemer Catholic church in Bangkok on Monday. AFP Thailand should try its best to curb a fourth wave of Covid-19 infections, especially preventing the spread of the Indian variant which might enter the country via the Myanmar border. Otherwise, additional borrowing to fight the new outbreak and rehabilitate the economy will be inevitable, warned Kobsak Pootrakool, former minister to the Prime Minister's Office. The government will have a limited budget to fight a new Covid-19 outbreak as current public debt is getting close to the ceiling set by the state's fiscal sustainability framework, which caps public debt at 60% of GDP, said Mr Kobsak, now senior executive vice-president of Bangkok Bank.