Pentagon recruitment policy for the military has been updated with new coronavirus restrictions. All recruits who had been hospitalized with the coronavirus are medically disqualified for accession and must receive a waiver by a Service Medical Waiver Authority. The Military Entrance Processing Command has commented that those who were hospitalized were more likely to be contagious for a longer period of time and require more testing to ensure they are physically healthy enough to join the military. Evaluations for residual physical performance limitations such as pulmonary and end-organ function are likely. The command stated that the new requirements are necessary because the long-term effects of the virus are unknown.
Source: https://www.voanews.com/covid-19-pandemic/pentagon-covid-19-hospital-stay-disqualifies-recruits