Published in TB and Outbreaks Week, October 7th, 2003
The total number of cases in Illinois, Michigan, Texas, and West Virginia dropped from about 102,200 in 1990 to about 24,500 in 2001, the U.S. Centers for Disease Control and Prevention (CDC) said.
At the same time, the percentage of infants receiving chickenpox shots rose from less than 9% in 1996 to as much as 83% in 2001, the CDC said.
All four states saw chickenpox rates drop to below 1 case per 1000 people.
The CDC studied the four states because of...
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