All four, including a seven-year-old boy, are residents of the Bapu Dham colony, the worst-affected area in the city.
Two more coronavirus patients have been discharged after being fully cured of the infection, taking the number of those recovered to 32, as per a bulletin.
A total of 2,420 samples have been tested so far and of these, 2,206 samples are negative while the reports of 24 are awaited, it said.
A total of 154 cases are active in the city, the bulletin stated.
So far, three people have died of coronavirus in Chandigarh, it added. CHS VSD IJT