significant-population sizes, stretching from georgia to texas to missouri. places that could become breeding grounds for more deadly covid variants. a stronger mutation will surface, and it will become predominant, unless we get vaccinated. reporter: new cases jumping more than 50%, week over week, in louisiana where just 35% are fully vaccinated. and tennessee, where it s about 38%. simply put, in areas of low-vaccination coverage, hospitalizations are up. reporter: with less than half the population fully vaccinated, nationwide, the white house ramping up outreach to pediatricians at workplaces and on school campuses. our job is to keep doing all we can to reach americans, where they are. to answer their questions, and to make it as easy as possible for them to get a shot, as soon as they are ready. reporter: and efforts to have doctors and religious and community leaders going door to door to answer questions for the vaccine hesitant. for those individuals or organiza
stretching from georgia to texas to missouri. places that could become breeding grounds for more deadly covid variants. a stronger mutation will surface, and it will become predominant unless we get vaccinated. reporter: new cases jumping more than 50% week over week in louisiana where just 35% are fully vaccinated, and tennessee, where it s about 38%. simply put, in areas of low vaccination coverage, hospitalizations are up. reporter: with less than half the population fully vaccinated nationwide, the white house ramping up outreach to pediatricians, at workplaces and on school campuses. our job is to keep doing all we can to reach americans where they are, to answer their questions, and to make it as easy as possible for them to get a shot as soon as they are ready. reporter: and efforts to have doctors and religious and community leaders going door to door to answer questions for the vaccine hesitant. for those individuals or organizations that are feeding misinformati