Here’s why we can have some hope about the Covid pandemic  CNN

source https://news.google.com/__i/rss/rd/articles/CBMiVGh0dHBzOi8vd3d3LmNubi5jb20vMjAyMS8wMS8xMy9oZWFsdGgvY292aWQtcGFuZGVtaWMtcmVhc29ucy1mb3Itb3B0aW1pc20vaW5kZXguaHRtbNIBWGh0dHBzOi8vYW1wLmNubi5jb20vY25uLzIwMjEvMDEvMTMvaGVhbHRoL2NvdmlkLXBhbmRlbWljLXJlYXNvbnMtZm9yLW9wdGltaXNtL2luZGV4Lmh0bWw?oc=5