BANGKOK: Thailand on Friday (May 22) reported zero case of Covid-19 (coronavirus) but the government's Centre for Covid-19 Situation Administration (CCSA) warned Thais to remain cautions as "there are still infected people roaming undetected in the community," said CCSA spokesman Taweesin Visanuyothin.
"We suspect that there still infected people out there without our knowledge because ever since we launched the Active Finding Case (AFC) where we did random testing in high risk communities, we have picked up several people who have tested positive for Covid-19," said Taweesin.