Summary of global surveillance data of infectious diseases in April 2020

In April 2020, a total of 61 infectious diseases were reported globally, affecting 214 countries and regions. Except for influenza, the top five infectious diseases affecting greatest number of countries and regions were Novel coronavirus disease 2019（COVID-19）(214), measles (30), dengue fever (19), poliomyelitis (12) and rubella (9). The top four infectious diseases with highest case fatality rates were Ebola virus disease (65.8%), Middle East respiratory syndrome (34.2%), Lassa fever (19.0%) and COVID-19 (7.0%). The top five infectious diseases with greatest number of deaths were COVID-19, measles, dengue fever, cholera and Ebola virus disease. The prevalent infectious diseases in Asia were COVID-19, Middle East respiratory syndrome and dengue fever, the prevalent infectious diseases in Africa were COVID-19,Ebola virus disease, cholera, yellow fever, Lassa fever and measles, the prevalent infectious diseases in America were COVID-19 and dengue fever, the prevalent infectious diseases in Europe were COVID-19 and measles.and measles.