can be more than 90% effective from keeping a hiv negative person that way. many providers have not heard of it. >> one out of every three primary care providers and nurses are not aware about prep. >> reporter: dr. rosenthal has been working to get the word about 13 to 24 years old like lowman. and it's an age bracket that seen a spike in infections as overall hiv rates have dropped. >> i think we can bring the new

nine hurricanes? which governor made his state number one in job creation? which governor led the fight to stop obamacare expansion in his state? and which governor laid out a tough plan to destroy isis months before the paris attacks? jeb bush. right to rise usa is responsible .