CNN3: “:”u003cstrong>Officials can’t trace a high-school boy’s infection as the World Health Organization increases its assessment of the risk of COVID-19 to ‘very high at a global level’u003c/strong>”, “BANNER=|pagerendered| ((lubuntu at wor2))

|| screaming-banner-text banner-text-size–char-47″ data-analytics=”_list-hierarchical-xs_article_”> At least 4 US coronavirus cases not travel-related ||” , title: “CNN – Breaking News, Latest News and Videos” , siblings: {“articleList”:[{“uri”:”/2020/02/29/health/us-coronavirus-saturday/index.html”,”headline”:”u003cstrong>Officials can’t trace a high-school boy’s infection as the World Health Organization increases its assessment of the risk of COVID-19 to ‘very high at a global level’u003c/strong>”,”thumbnail”:”//cdn.cnn.com/cnnnext/dam/assets/200229033143-coronavirus-testing-development-small-11.jpg”,”duration”:””,”description”:”There are now at least four u003ca href=”https://www.cnn.com/2020/02/28/health/coronavirus-us-updates-california-patient/index.html” target=”_blank”>US coronavirus casesu003c/a> without any related travel history, health officials say.”,”layout”:””