Qualified hope published : 6 Jan 2021 at 06:55 63 A scientist at the Siam Bioscience Group works to produce Covid-19 test kits. (Photo by Pattarapong Chatpattarasill) The arrival of a Covid-19 vaccine would not mean an end to the virus prevention protocols the public has been told to abide by, and people would still be required to wear masks, wash their hands, and practise social distancing, says the country's head of disease control. "News of a Covid-19 vaccine might have sparked hopes of an economic recovery but that does not mean that restrictions will be lifted immediately," Opas Karnkawinpong, director-general of the Department of Disease Control (DDC), told the