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The T4 virus initiates an Escherichia coli infection by binding OmpC porin proteins and lipopolysaccharide (LPS) on the surface of E. coli cells with its long tail fibers (LTF). [16] [17] A recognition signal is sent through the LTFs to the baseplate. This unravels the short tail fibers (STF) that bind irreversibly to the E. coli cell surface.
Zika virus is an arthropod-borne virus transmitted by mosquitos, and infection during pregnancy can lead to severe congenital abnormalities in a newborn. Congenital infection can lead to fetal growth restriction and CNS abnormalities, including microcephaly , ventriculomegaly and intracranial calcifications.
In 1993, it was renamed again to T4-like phages, and was moved into the newly created order Caudovirales in 1998. The next year (1999), it was renamed to T4-like viruses. Once more, the genus was moved into the newly created subfamily Tevenvirinae in 2010-11, renamed to T4likevirus in 2012, and renamed again to T4virus in 2015.
Zika fever, caused by Zika virus, can cause microcephaly and other brain defects in the child. [11] COVID-19 in pregnancy is associated with an increased risk of stillbirth with an odds ratio of approximately 2. [12] Hepatitis B may also be classified as a vertically transmitted infection. The hepatitis B virus is
This page was last edited on 13 December 2018, at 18:32 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.
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These substances promote uterine contractions and cervical ripening, causations of premature birth. [4] The risk of developing chorioamnionitis increases with number of vaginal examinations performed in the final month of pregnancy, including labor. [5] [6] Tobacco and alcohol use also puts mothers at risk for chorioamnionitis development. [7]
Immune tolerance in pregnancy or maternal immune tolerance is the immune tolerance shown towards the fetus and placenta during pregnancy. This tolerance counters the immune response that would normally result in the rejection of something foreign in the body, as can happen in cases of spontaneous abortion .