I agree with Gnadenburg: why enforce the QR workforce to yearly blood checks when the locals may be just at risk when travelling abroad - I wander if Mr AAB himself announces his blood test results to all, that is of course if he does!
I have no objection to being screened myself when working abroad but why yearly? I'll never forget a colleague at QR who tested positive for HIV in Doha when I worked for QR - he was arrested, thrown in jail, treated like an animal and deported.