Even though health care workers, first responders and the elderly are finally getting vaccinated, with the supply of vaccine dwindling until more can be delivered this summer, it will be months before enough Americans are inoculated to stop the spread of the coronavirus. And scientists still are not 100% certain the current batches will be as effective against the more-infectious new variants, such as the ones from the UK and Brazil. Dr. Simone Wildes, Infectious Disease expert joins Tony Cruise with a look.