The Health Minister, who visited Thanajvur, one of the badly-hit districts by COVID in the Central region, for an inspection of the medical college, said that in addition to the existing beds, a COVID treatment centre with 220 ordinary and 80 oxygen supported beds have been set up in a month in Thanjavur Medical College Hospital and the number of cases have come down to 500 from 1,196 in the last 10 days, he informed.