Children living in London will be offered an extra dose of the polio vaccine following the discovery of poliovirus in sewage in the British capital, health authorities announced Wednesday.
원문출처 : https://www.cnn.com/2022/08/10/europe/polio-vaccine-children-london-intl/index.html
원문출처 : https://www.cnn.com/2022/08/10/europe/polio-vaccine-children-london-intl/index.html