Related by context. Frequent words. (Click for all words.) 55 occurs 52 occur 48 occurred 47 occured 47 occurring 44 unpreventable 43 persists 43 unavoidable 42 ocurred 42 happens 42 reoccurred 41 paralysis muscular atrophy 41 causes 41 triggers 40 happen 40 arises 40 occurrence 40 occuring 39 unpredicted 39 freak occurrence 39 manifests itself 38 catastrophic 38 occurence 38 caused 38 happened 38 incapacitates 38 abates 38 interrupts 38 entirely avoidable 38 containable 38 severe 38 fatal 38 arise 38 overreacts 37 recur 37 erupts 37 react 37 deadly 36 cause 36 unaware 36 unforeseeable 36 unexpectedness 36 severity 36 recedes 36 recurs 36 manifest itself 36 uncommon 36 reoccur 36 occurance 36 disrupts 36 uncontrolled 36 occurences 35 exposed 35 Viral meningitis 35 worsens 35 disorientating 35 triggered 35 avoidable 35 unpredictably 35 behaves differently 35 unforeseen 35 uncommon occurrence 35 ensues 35 rare occurrence 35 catastrophic proportions 35 instances 35 detected 35 goes haywire 35 epidemics 35 Occurs 35 consequence 34 irresolvable 34 ensue 34 malaria diarrhea 34 infects humans 34 interrupt 34 erupt 34 happening 34 reactively 34 naturally occurring methane 34 disconnects 34 unplanned 34 exogenous factors 34 provokes 34 escalates 34 caught unawares 34 severities 34 endemic 34 inevitable 34 disturbs 34 everyday occurrences 34 plugin document.write 34 initiates 33 abnormal 33 underlying 33 precipitates 33 mildly annoying 33 trigger 33 boils 33 susceptible 33 minimized