When it comes to vaccinating yourself -- or your kids -- against the flu, there are two options in the United States: a traditional shot or a nasal spray.
원문출처 : https://www.cnn.com/2019/01/07/health/flumist-not-as-effective-as-flu-shot-study/index.html
원문출처 : https://www.cnn.com/2019/01/07/health/flumist-not-as-effective-as-flu-shot-study/index.html