Yes I think so too and I gather the reason is to show how long the virus will take to infect everyone so. I believe they said everyone will experience the virus. Will it be by raw exposure or by Vaccine. The flu vaccine is continually modified but will we be able to add the future protection to the dose or will we need to have two separate shots or other options of delivery. The damage from the newest virus to the lungs (scarring) is not reversible.