If vaccines have eradicated diseases such as small pox and eliminated polio, why is it that our immunization schedule has continued to add recommended shots each year? In the mid-1980s a child received seven vaccines, the polio vaccine by mouth, and a total of five shots by the time they were 2 years old with no more than one shot per visit. Fast forward to 2013. Now a child could receive as many as 24 shots by the age of 2 and as many as five shots each visit.
Why are children receiving more shots than ever before? One possible solution is linked to herd immunity. Another reason for the substantial increase may be drug companies' multi billion-dollar earnings and/or profit incentives. Why has the U.S. continued to increase the number of vaccines upon eradicating some of the most deadly diseases?