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What is Babesia?

May 27, 2026

Two lion cubs recently died in Gujarat’s Gir National Park region due to a suspected Babesia infection.

About Babesia:

  • Babesia is a genus of microscopic parasites that infect the red blood cells (RBCs) of animals and humans, causing the disease known as babesiosis.
  • These protozoa are transmitted mainly by the bite of ticks, primarily by the Ixodes tick, also known as a deer tick, which is also responsible for transmitting other diseases, such as Lyme disease.
  • Babesiosis can affect both animals and humans, although it is much more common in animals, especially cattle, dogs, and other mammals.
  • Human infection is more common in areas where ticks are common.
  • The geographical distribution of Babesia is primarily in the Americas, especially in the Northeast region, as well as regions of Europe and Asia.
  • Is Babesiosis Contagious?
    • No, babesiosis isn’t contagious from person to person.
    • Rarely, Babesia is transmitted from a pregnant women to the fetus.
  • Treatment:
    • Treatment for babesiosis usually involves a combination of antimicrobial drugs, as the infection is caused by a parasite.
    • The most recommended is a combination therapy of two drugs, atovaquone (antiparasitic) and azithromycin (antibiotic).

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