Relapsing fever risk factors: Difference between revisions
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Although there is limited information on the immunity of TBRF, there have been patients who developed the disease more than once.<ref>http://www.cdc.gov/ncidod/dvbid/RelapsingFever/RF_Symptoms.htm | Although there is limited information on the immunity of TBRF, there have been patients who developed the disease more than once.<ref>http://www.cdc.gov/ncidod/dvbid/RelapsingFever/RF_Symptoms.htm | ||
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Revision as of 17:51, 3 December 2012
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Risk Factors
TBRF in pregnancy
TBRF contacted during pregnancy can cause spontaneous abortion, [[premature birth, and neonatal death (Melkert and Stel 1991). The maternal-fetal transmission of Borrelia is believed to occur either transplacentally (Steenbarger 1982) or while traversing the birth canal. In one study, perinatal infection with TBRF was shown to lead to lower birth weights, younger gestational age, and higher perinatal mortality (Jongen, van Roosmalen et al. 1997).
In general, pregnant women have higher spirochete loads and more severe symptoms than nonpregnant women. Higher spirochete loads have not, however, been found to correlate with fetal outcome.
Immunity
Although there is limited information on the immunity of TBRF, there have been patients who developed the disease more than once.[1]