We don't have synonyms for babesias yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are babesia, bayesian and babesiasis.
(n) :
(microbiology, epidemiology) Any of the hematozoa of the genus Babesia that invades the erythrocytes of living mammals, notably including cattle and humans, causing any of several babesioses.
(n) :
(microbiology, epidemiology) Any of the hematozoa of the genus Babesia that invades the erythrocytes of living mammals, notably including cattle and humans, causing any of several babesioses.