The cases were detected between July 10 and Nov. 3 in several quarantine zones. They have so far recovered from the disease, the province's Department of Health stated.
Nguyen Hong Chuong, director of the department, said several private entities joined the fray to perform Covid-19 testing, but failed to send the data to the provincial Center for Disease Control (CDC), resulting in the data mismatch.
The province "did not try to hide the cases," Chuong said.
"Announcement of these new cases serves to ensure the rights of those infected and the transparency of the Covid-19 fight," Chuong said.
So far, Binh Duong has confirmed over 248,000 Covid-19 cases in the fourth wave with over 2,600 deaths. It has the second highest number of cases in Vietnam, behind Ho Chi Minh City at over 450,000.