Any evidence the Italian 'Marsh' people still take anti malarial drugs for fevers? Old habits die hard in isolated communities used to managing their own illnesses away from the big cities and the dictats of the WHO.
None AFAIK. Malaria was eradicated there 70 years ago.
BTW, Boris is very likely a Metformin user, so probably not the best candidate for HCQ. He has in recent years been a big supporter of Diabetes charities and government initaives on sugar tax etc.