By examining a number of historically notable epidemics ,
that emerging diseases , <*> have occurred throughout recorded history .
By examining a number of historically notable epidemics , we suggest that emerging diseases , similar in their novelty , impact , and elicitation of control responses , have occurred throughout recorded history .
By examining a number of historically notable epidemics , we suggest that emerging diseases , similar in their novelty , impact , and elicitation of control responses , have occurred throughout recorded history .