Preconceptual Zika virus asymptomatic infection protects against secondary prenatal infection
نویسندگان
چکیده
Pregnant women, and their fetal offspring, are uniquely susceptible to Zika virus and other microbial pathogens capable of congenital fetal infection. Unavoidable exposure to Zika virus in endemic areas underscores the need for identifying at-risk individuals, and protecting expecting mothers and their fetal offspring against prenatal infection. Here we show that primary Zika virus asymptomatic infection in mice confers protection against re-infection, and that these protective benefits are maintained during pregnancy. Zika virus recovery was sharply reduced in maternal tissues and amongst fetal concepti after prenatal challenge in mothers with resolved subclinical infection prior to pregnancy compared with mice undergoing primary prenatal infection. These benefits coincide with expanded accumulation of viral-specific antibodies in maternal serum and fetal tissues that protect against infection by the identical or heterologous Zika virus genotype strains. Thus, preconceptual infection primes Zika virus-specific antibodies that confer cross-genotype protection against re-infection during pregnancy.
منابع مشابه
مروری جامع بر عفونت ویروس زیکا
Zika virus is a mosquito-borne flavivirus that is becoming a new global threat. Currently, serologic (ELISA) and molecular (RT-PCR) testing make the diagnosis of Zika virus infection. There is no specific drug available for Zika virus infection, and treatment is supportive based on reducing symptoms of disease. Protection against mosquito bites is the most effective way to prevent the infection...
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