V1 P1, 4%
"...sparing him no measure of animosity, scorn, [or] loathing."
4%
"Though he was only a young boy, but a month past his tenth birthday..."
In the time it's taken me to type this up I've talked myself out of it, but originally I had thought it worked better without the comma after 'boy'. Leaving this in anyway, for someone with better grammar skills than I to assess.
11%
Blight was a general term for any form of calamity brought about by a poison known as miasma, which was born from the realm of death**[.]**
(missing fullstop)