Until Wednesday, Kentucky was following guidance from the U.S. Centers for Disease Control and Prevention.
At this time, no booster dose is recommended for those that received the Johnson & Johnson COVID-19 vaccine.
The shot will combine Moderna's current COVID-19 vaccine with a new flu vaccine that is still under development.
Moderna's COVID-19 vaccine could become second to win full approval following Pfizer/BioNTech.
Kentucky reported 4,009 newly confirmed cases on COVID-19 on Friday, along with a positivity rate of 11.83%.
There are at least seven upcoming mobile events beginning Thursday, June 24 where people can go to get a vaccine.
The company hopes to have it rolled out by this fall, according to its CEO Stephane Bancel. Clinical data on a booster shot could come in May.
Indiana is one of 20 universities doing research with about 12,000 college students ages 18 to 26.
Results indicated a 90% drop in infection risk after participants were fully vaccinated, or in other words, two weeks after they received second jabs developed by Pfizer or Moderna.