Answer: epidemics

AnswerCrossword Clue
EPIDEMICSRapid spreads
EPIDEMICSOutbreaks that spread like wildfire
EPIDEMICSWidespread outbreaks
epidemicsA disease occurring in such a way
epidemicsA sudden, widespread occurrence of a particular undesirable phenomenon
epidemicsEPIDEMIC, a widespread outbreak of a disease
epidemicsA widespread occurrence of an infectious disease in a community at a particular time