Remember Polio? Infectious Disease History Lesson.
Do you remember the polio epidemic? Do you know why these days polio is extinct in the United States? Because of vaccinations. Why don’t you learn from history?
Panelist: The mortality rates from diseases such as, diphtheria, polio, and measles, declined by 95-98% prior to the introduction of these vaccines. See here at length.
Also, many once-deadly diseases such as cholera, typhoid, typhus, tuberculosis, and scarlet fever, declined and disappeared AT THE SAME RATE AND DURING THE EXACT SAME TIME PERIOD AS THE OTHER DISEASES, BUT WITHOUT ANY VACCINE.
Therefore, the conclusion that mortality rates declined solely because of a vaccine is questionable, at best. See here at length.
Regarding polio, pertussis (whooping cough), and influenza, the vaccines only protect the one who received them from severe symptoms of these diseases, but not from contracting the diseases and transmitting them to others.
(Therefore, someone who does take the vaccine is just as likely to spread these diseases as someone who does not.) In fact, someone vaccinated is more likely to spread disease, as the vaccinated could have an asymptomatic infection, and will not take the necessary precautions to avoid public places while infected. See here point number 4 on the downloadable pdf and sources.
If we were convinced of the efficacy and safety of a vaccine against a deadly global epidemic, we would surely vaccinate against it.