Twenty more people weredetected with coronavirus in Kerala on Saturday, taking the total number of those undergoing treatment for the deadly infection to 181, Health Minister K K Shailaja said.While Kannur reported eight cases, Kasaragod 7, Thiruvananthapuram, Ernkulam, Thrissur, Palakad and Malappuram reported one case each, Shailaja said in a statement here.Of the 20 people, 18 had come from abroad and two others had been infected through contact.The man found positive here was in the isolation ICU of the Thiruvananthapuram Medical College hospital, while one positive case from Ernakulam was a health worker.The samples of four persons who were under treatment at Pathnamthitta were found negative.At least, 1,41,211 people are under observation across the state, the Minister addd.