https://historyofvaccines.org/vaccines-101/how-are-vaccines-made/human-cell-strains-vaccine-development/?fbclid=IwAR0DZAWH1hJiircs_Wyev26MPwWQBvmpGIjH5zLQOoWf0gzzusiCTKBq5DA
Human Cell Strains in Vaccine Development | History of Vaccines
Human cells have been used to develop vaccines against many diseases, including rubella, chickenpox, and rabies.
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https://www.rcpch.ac.uk/news-events/news/brief-history-vaccines
A brief history of vaccines | RCPCH
Globally, immunisation has saved six lives every minute since 1974, a total of over 154 million, including 101 million under-5s. It is thought that vaccines...
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https://www.nelocnews.com.ng/2022/04/health-wise-history-of-vaccines.html
Health wise: The history of Vaccines - NELOC Media News
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