ORLANDO, Fla. – As health officials across Central Florida close the book on 2020, there is widespread agreement on the challenges surrounding vaccine distribution at each county level.Lake County spent the week working to juggle vaccine supply and its extraordinary demand, which resorted to a “by appointment only” basis.“There was so many calls that the phone lines crashed,” said Aaron Kissler, health officer with the Florida Department of Health in Lake County.Phone lines crashed in Lake County due to the high volume of inquiries.“It was difficult, but at one point we eventually had to cut it off,” Kissler said.Officials in Seminole County said after their vaccine rollout, they reflected on issues they faced.“We have learned a couple of.