Geography, 08.11.2019 23:31 wolfiewolffromsketch

The graph gives the number of varicella (chicken pox) cases between 1972 and 2011. varicella is an infectious disease caused by a virus. the
disease causes rash, itching, and fever in patients. the varicella vaccine was introduced in 1995. what can you conclude about the vaccine?

a.
it was successful in eradicating chicken pox from the united states
b.
it had no effect on the rate of chicken pox cases in the united states
c.
it caused a 10% decrease in the number of chicken pox cases in the united states from 1995 to 2011
d.
it initially caused a large drop in chicken pox cases in the united states, and the rate continues to decrease

The graph gives the number of varicella (chicken pox) cases between 1972 and 2011. varicella is an i

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The graph gives the number of varicella (chicken pox) cases between 1972 and 2011. varicella is an i...

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