In the 1960s, infectious diseases were not completely eradicated and still aren't.
Due to the mutation that bacteria go through, infectious diseases were not completely eradicated and still aren't. Because bacteria develop resistance to existing antibiotics, it is very difficult to entirely eradicate illnesses. Some diseases, like polio and measles, came very near to being eliminated, but this wasn't possible since some individuals weren't immunized.
One exception is that, because of vaccination, only the smallpox virus has been totally eradicated.
In the 1960s, infectious diseases were not completely eradicated and still aren't.
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