11 May 2021. Bangkok recorded its lowest number of new Covid-19 cases in five days on Monday, but the good news was marred by the detection of three new coronavirus clusters in the capital. City officials are carrying out active-case finding.http://11 May 2021. Bangkok recorded its lowest number of new Covid-19 cases in five days on Monday, but the good news was marred by the detection of three new coronavirus clusters in the capital. City officials are carrying out active-case finding.