With Gift Aid, your generous donation of £10 would be worth £12.50 at no extra cost to you.
I am a UK taxpayer and I understand that if I pay less Income and /or Capital Gains Tax than the amount of Gift Aid claimed on all my donations in the relevant tax year, it is my responsibility to pay any difference.
Some routes of transmission are biologically plausible, but there are virtually no documented cases. There are also impossible modes of transmission, with no documented cases or biological plausibility.
