explosion
apocalypse
concept
conceptual
contagion
contamination
craze
danger
disease
doomsday
education
endemic
epidemic
epizootic
eruption
extensive
flareup
global
hazard
hazardous
health
horror
human
idea
inescapable
infection
infestation widespread disease
outbreak
outburst
pandemic
penetrating
pervading
pervasive
plague
predominant
prevalent
rampant
rife
scourge
sign
spate
spread
sweeping
universal
wave
wide ranging
widespread
widespread illness pandemic
worldwide pandemic