Vaccine trials show early promising results — but major challenges are ahead - NBCNews.com

1. Vaccine trials show early promising results — but major challenges are ahead  NBCNews.com
2. First human trial of Oxford coronavirus vaccine shows promise  Reuters India
3. Wave of promising study results raise hopes for COVID-19 vaccines  CNA
4. COVID-19: Search for a vaccine  CGTN Africa
5. Bhubaneswar's SUM Hospital All Set For For Human Trial Of Covaxin From Wednesday  OdishaBytes
6. View Full Coverage on Google News

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