The countries with the 10 greatest number of Covid-19 cases:
Cholera – Nigeria
The number of new suspected cholera cases in Nigeria decreased by 38 percent the week ending September 19 (1,825) compared to the week ending September 12 (2,955), according to the Nigeria Centre for Disease Control (NCDC). The number of suspected cases now stands at 81,413 for 2021 to date, including 2,791 deaths.
Bird Flu – China
Two additional human cases of avian influenza A(H5N6) have been reported in the China mainland, both cases having had prior exposure to a live poultry market before onset of the symptoms.
West Nile Virus – Arizona, USA
Arizona reports 132 confirmed and 78 probable cases through September 29. Maricopa County, which includes the city of Phoenix, accounts for 84 percent of the confirmed cases with 115, and reports 174 total cases.