What's the death rate got to do with anything? We're talking about confirmed cases, which is having an impact on football matches across all divisions. Brentford's manager has called for all Premier Leagye fixtures to be postponed this weekend due to the situation.
Are you living under a rock or something?
To answer your question, whether teams play on Boxing Day or not will be dependant on when cases were confirmed/whether any further cases are confirmed in the coming days/whether confirmed cases habe had close contact with others in the club/how many players they have available/etc.
I genuinely don't think you're grasping any of this at all.