Ludhiana: Four Covid cases were reported in Ludhiana district on Tuesday. The patients included two international travellers. Health officials said that one of the patients, a 53-year-old woman from Jamalpur, was diagnosed during pre-operative check-up. A 35-year-old woman from Baba Deep Singh Nagar also tested positive during an OPD check-up. A 75-year-old man and a 71-year-old woman from BRS Nagar, who are international travellers, also tested positive. tnn