Dozens of doctors, nurses and medical personnel in Gaza have been trained by Israeli teams in techniques to treat patients infected with the coronavirus. Sessions took place at the Erez border crossing, at Barzilai Medical Center in Ashkelon and by conference calls. Hamas even acknowledged it.
https://www.timesofisrael.com/amid-coronavirus-pandemic-gaza-medics-trained-by-israeli-teams-report/
https://unitedwithisrael.org/hamas-admits-gaza-doctors-trained-by-israel-to-deal-with-coronavirus/