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RE: The History Of Vaccine Court Series
Vaccine is an effective means to protect against some serious diseases.
Thanks to the vaccine, smallpox has disappeared, while other diseases, such as poliomyelitis, have become very rare. To ensure and maintain protection against these diseases it is necessary to take appropriate vaccines
Through research I found infectious diseases like smallpox have disappeared because of hygiene/waste disposal programs, safe housing, better nutrition, and lack of wars and famine. Vaccines were introduced when all infectious diseases were declining.
You may be in some poor countries