Admin: Created page with "Babesia are protozoa transferred by a tick-vector and are acquired most frequently (though not exclusively) in the Americas. ---- '''Summary of simple forms''' link= The particular challenge of babesia is their resemblance to the trophozoites of malaria (most specifically ''P.falciparum''). This is important since babesia may be a severe diease and treatment differs Click here for further information|https://www.cdc.gov/tic..."

2024-12-22T21:27:06Z

Created page with "Babesia are protozoa transferred by a tick-vector and are acquired most frequently (though not exclusively) in the Americas. ---- '''Summary of simple forms''' right|400px|link= The particular challenge of babesia is their resemblance to the trophozoites of malaria (most specifically ''P.falciparum''). This is important since babesia may be a severe diease and treatment differs Click here for further information|https://www.cdc.gov/tic..."

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Babesia are protozoa transferred by a tick-vector and are acquired most frequently (though not exclusively) in the Americas.

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'''Summary of simple forms'''
[[File:Babesia_simple.jpg|right|400px|link=]]

The particular challenge of babesia is their resemblance to the trophozoites of malaria (most specifically ''P.falciparum''). This is important since babesia may be a severe diease and treatment differs [[Click here for further information|https://www.cdc.gov/ticks/tickbornediseases/babesiosis.html]]

*The most common species in humans (''babesia microti'') has the appearance of a “ring”
*May involve fewer than 1% of erythrocytes or up to 80%
*Rings resemble P. falciparum: small and fine with accole forms and multiple parasites within a single cell

'''Distinguishing babesia trophozoites from malaria'''

*Typically, size and form vary more significantly than in malaria
*Pigment is not seen at any developmental stage
*Extra-erythrocytic forms (single or clumped) are often present

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'''Summary of complex forms'''

[[File:Babesia_complex.jpg|right|400px|link=]]

Babesia is frequently associated with complex parasite forms within cells. These may include:

'''Extracellular forms'''

*Single free parasites
*Masses of parasites clumped together

'''Asexual forms'''

Asexual replication (similar to schizonts of malaria) with two division cycles forming up to four separate daughter parasites:

*Tetrads of merozoites arranged in the form of a ‘Maltese Cross’ (characteristic but rare)
*More often a complex of fine elongated or ring forms occurs within a single cell
*These may be difficult to distinguish from multiply infected cells
*In contrast to malaria, pigment is not seen

'''Sexual forms'''

*Gametocytes remain intra-erythrocytic, becoming more solid and larger than typical rings, these forms are often infrequent.

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'''More'''

[[BABESIA Gallery|click for gallery of forms]]
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Babesia - Revision history