Cholera cases have been reported in11 provinces and cities across Vietnam this year, deputy minister of health ministry Trinh Quan Huan said Sunday.
Hanoi, Ho Chi Minh City and the Mekong Delta provinces of Ben Tre and Bac Lieu are among the worst-hit localities, according to Huan.
He said most of the cases were related to poorly processed food and ice made with dirty water, without elaborating on the total number of cases.
Also on Sunday, Dr. Nguyen Nhat Cam from Hanoi's Preventive Health Center said cholera patients have been recorded at 20 out of the capital's 28 districts.
City agencies have so far found cholera bacteria in dogs at slaughterhouses in Duong Noi Commune and another one in Hoai Duc District, according to Cam.
This prompted Hanoi on Friday to suspend all dog meat businesses in the commune of Ha Dong District for 10-15 days for inspections and sanitization, Vietnam News reported.
The acute intestinal infection, sometimes fatal without prompt treatment, ravaged northern Vietnam in 2008 and 2009, infecting hundreds of people each time.