“Many peo­ple think that the only tick-borne dis­eases to worry about are Lyme dis­ease or Rocky Moun­tain spot­ted fever in hu­mans, not re­al­iz­ing that there are many other dis­eases out there that they and/or their horses could get,” says An­gela Pelzel-McClu

EQUUS - - Biology -

is one of the mys­ter­ies of Lyme dis­ease; it is so vari­able in pre­sen­ta­tion----in hu­mans as well as dogs and horses. There are peo­ple who test pos­i­tive for Lyme dis­ease who never had any symp­toms ei­ther. Per­haps they have a stronger im­mune sys­tem or en­coun­tered weaker bac­te­ria; we don’t know.”

• DI­AG­NO­SIS: Lyme dis­ease is dif­fi­cult to di­ag­nose be­cause ex­po­sure to the bac­terium alone is not proof of ill­ness, and the out­ward signs mimic so many other prob­lems. For that rea­son, other ill­nesses and in­juries are gen­er­ally ruled out be­fore a Lyme di­ag­no­sis is made.

ELISA and Western blot tests, which de­tect an­ti­bod­ies to B. burgdor­feri in

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