Press reports indicate that over 5500 “fully vaccinated” persons have contracted Covid 19. How is that possible?

The only believable answer is that they had been “vaccinated” with dud vaccine obtained, possibly corruptly, from unauthorised sources peddling useless remedies.

That puts the heath authorities concerned under the obligation to reveal the source of the “vaccines” given to these new infectees.
Dont hold your breath. Widespread PN corruption is bad enough without poisoning innocent ;Malaysians. Some of whom might even have been PN supporters.