Covid-19 is not a weak virus as it has infected more than 200 million people and killed over 5 million, Assoc Prof Dr Thira Woratanarat from Chulalongkorn Universitys Faculty of Medicine said in a Facebook post on Saturday.
He said many countries, including those that had decided to "co-exist" with Covid-19, have launched strict measures to curb the spread of the disease. He is advising people to wear two face masks (a surgical mask with a cloth mask on top), maintain social distancing, avoid gatherings especially in poorly ventilated places and celebrate Christmas and New Year at home.