Summary of global surveillance data of infectious diseases in September 2019

In September 2019, a total of 62 infectious diseases were reported globally, affecting 86 countries and regions. Except for influenza, the top five infectious diseases affecting greatest number of countries and regions were dengue fever (36), measles (32), cholera (17), Chikungunya virus disease (10) and poliomyelitis (9). The top four infectious diseases with highest case fatality rates were Ebola virus disease (66.8%), Middle East respiratory syndrome (34.4%), Lassa fever (21.3%) and West Nile fever (9.3%). The top five infectious diseases with greatest number of deaths were measles, dengue fever, Ebola virus disease, cholera and West Nile fever. The prevalent infectious diseases in Africa were Ebola virus disease, cholera, yellow fever and Lassa fever, the prevalent infectious diseases in Asia were dengue fever and Middle East respiratory syndrome, the prevalent infectious diseases in America were dengue fever and measles, the prevalent infectious diseases in Europe were West Nile fever and measles.