The district has logged nine new Covid-19 deaths and as many as 107 fresh cases in the past 24 hours, health officials said on Saturday.
The new infections have raised the total case count in Chapainawabganj to 2,347. The district's death toll, on the other hand, has risen to 54, as per official figures.
Some 1,129 people have recovered so far in the district, officials said.
Meanwhile, the lockdown, which has been imposed in the country due to a surge in Covid-19 cases, entered its 12th day in the district on Saturday.
All vehicles stayed off the roads, though the restrictions were waived for ambulances, goods-laden vehicles and cars carrying patients to hospitals. Vehicular movement restrictions prevailed on Rajshahi-Naogaon border also.
Besides, the local administration has also mobilised mobile courts for taking action against people violating Covid-safety protocols.
On May 24, authorities in Chapainawabganj imposed a week-long lockdown to break the chain of Covid transmission.
On May 31, the local administration extended the lockdown in Chapainawabganj by one more week due to the worsening Covid-19 situation.