CNN.com - RSS Channel - HP HeroCovid herd immunity is a difficult target, but vaccinating this age group could be key

• US supports vaccine patent waiver proposal • Here's how the pandemic affected births • Covid vaccines can take on new variants, studies show

May 06, 2021 at 12:58PM https://www.cnn.com/2021/05/06/health/us-coronavirus-thursday/index.html• US supports vaccine patent waiver proposal • Here's how the pandemic affected births • Covid vaccines can take on new variants, studies show