The Thiruvananthapuram Corporation has commenced camps for renewal of health insurance cards of beneficiaries. The camps, which commenced at various wards on Saturday, will continue until May 24. Government Sanskrit High School at Fort will function as a permanent centre until May 31. Card-holders who have renewed their insurance policies until 2013 will be able to avail themselves of the service of the permanent centre. All centres established for the exercise will function from 10 a.m. to 5 p.m. on the scheduled days, according to an official release.