Surat: Surat city on Tuesday recorded 18 new Covid-19 cases. The highest number of cases were reported from the Rander zone (6) followed by three cases in Athwa zone. Three out of eight civic zones — Central, Varachha (A) and Limbayat reported one case each on Tuesday. SMC officials said that 102 Covid-19 patients were discharged from different hospitals in the city. On Tuesday, only 43 Covid-19 patients were under treatment in different hospitals of the city. In Surat district, four new cases were reported on Tuesday. On the vaccination front, SMC will operate two vaccination centres in each of the eight civic zones on Wednesday for Covaxin and urged people to take their first or second dose of vaccine from these centres. There are another 102 vaccination centres for Covidshield in the city.