Can someone get reinfected with CoVID-19 once they've had it?
What remains to be seen, from the reading I've done so far, is if the viral sheath on MERS/SARS Coronaviruses have similarities and consistent protein expression to SARS-CoV-2/CoVID-19 ... if so, then GREAT NEWS, its likely that a vaccine is going to be available sooner than later
Short answer, if the genetic target of the antibodies you develop from infection 1 stay the same in infection 2, 3, 4 then no, you will not get "reinfected" ... if they change, a'la Influenza, then yes you could get "reinfected"