Glossary entry (derived from question below)
English term or phrase:
...fight free of the fever´s leeching grasp.
Portuguese translation:
...Livrar-se da febre debilitante.
English term
Brazil
Native in: Portuguese 
Works in: English to Portuguese, Spanish to English, English to Spanish, and 1 more.
...fight free of the fever´s leeching grasp.
Proposed translations
United States
Always looking forward to new challenges
Native in: Portuguese (Variant: Brazilian) , English (Variant: US)
Works in: English to Portuguese, Portuguese to English
...Livrar-se da febre debilitante.
Portugal
Breaking language barriers
Native in: Portuguese (Variant: European/Portugal) 
Works in: English to Portuguese, French to Portuguese, Spanish to Portuguese, and 1 more.
...(para) se libertar da febre persistente
Portugal
Maria Teresa Borges de Almeida 
30+ years translating EU documents
Native in: Portuguese (Variant: European/Portugal)
Works in: English to Portuguese, French to Portuguese, Spanish to Portuguese, and 1 more.
(para) se desembaraçar da inoportuna febre
United States
Marlene Curtis
Native in: Portuguese , English
Works in: English to Portuguese, Portuguese to English
...libertar-se das garras parasitárias da febre
United Kingdom
Translations with Journalistic Style
Native in: Portuguese (Variant: Brazilian)
Works in: English to Portuguese, French to Portuguese, Portuguese
para lutar contra a febre que o acometia
...se liberar da febre que lhe devorava o sangue...
Leech=>sanguessuga to leech (one's) blood=>sacar/ roubar o sangue (a alguém)
Some refernce:
Leech - Wikipedia, the free encyclopedia
Some leeches have haemoglobin dissolved in the blood, although they have no blood ... The crop allows a leech to store blood up to five times its body size; ...
Anatomy - Systematics and taxonomy - Reproduction - Nutrition
en.wikipedia.org/wiki/Leech - Cached - Similar
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