How the fight against polio was won 0 03.05.2020 16:09 CBSNews.com When a mysterious and deadly virus swept America beginning in the early 20th century, scientists succeeded in developing a vaccine, a triumph that researchers are working to replicate in our battle today against COVID-19 Партнёры Smi24.net Все новости за 24 часа Музыкальные новости Агрегатор новостей 24СМИ
