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Summary of global surveillance data of infectious diseases in December 2019

In December 2019, a total of 64 infectious diseases were reported globally, affecting 82 countries and regions. Except for influenza, the top five infectious diseases affecting greatest number of countries and regions were measles (49), dengue fever (26), chikungunya fever (8), poliomyelitis (8) and cerebrospinal meningitis (8). The top four infectious diseases with highest case fatality rates were Ebola virus disease (66.0%), Middle East respiratory syndrome (34.4%), Lassa fever (20.8%) and plague (16.0%). The top five infectious diseases with greatest number of deaths were measles, malaria, dengue fever, cholera and Ebola virus disease. The prevalent infectious diseases in Africa were Ebola virus disease, plague, cholera, yellow fever, Lassa fever and measles, the prevalent infectious diseases in Asia were dengue fever and Middle East respiratory syndrome, the prevalent infectious diseases in America was dengue fever, the prevalent infectious diseases in Europe was measles.