Which of the following is characteristic of a single exposure common vehicle outbreak?
a.Frequent secondary cases
b.Severity increases with increasing age
c.Explosive
d.Cases occur continuously beyond the longest incubation period
ans:c.Explosive
Which of the following is characteristic of a single exposure common vehicle outbreak?
a.Frequent secondary cases
b.Severity increases with increasing age
c.Explosive
d.Cases occur continuously beyond the longest incubation period
ans:c.Explosive