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The article outlines examples of a viral (varicella-zoster virus, VZV), a bacterial (
Lyme borreliosis) and a parasitic (scabies) infection in pregnancy with their risk for the mother and/or child as well as their management. VZV infections cause various clinical scenarios depending on the maternal immune status and the time of infection. Herpes zoster usually poses no risk to the pregnant woman and there is no need for antiviral therapy. VZV infection of a seronegative mother, however, may lead to severe varicella in the pregnant woman and to congenital malformations (congenital varicella syndrome) in case of early infection or neonatal varicella in case of perinatal infection. Prompt therapy with acyclovir or administration of VZV immunoglobulin for prophylaxis is mandatory in those patients. In case of
Lyme borreliosis of the mother, adequate antibiotic therapy with amoxicillin prevents harm to the fetus. Doxycycline is contraindicated during pregnancy. Scabies represents an important differential diagnosis of pruritic dermatoses in pregnancy and should be treated with permethrin 5% cream.