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Microcephaly was present in 7 children from a group of 11 pregnant women at 11–17 weeks of gestation who survived the blast at less than 1.2 km (0.75 mi) from ground zero. [57] Due to their proximity to the bomb, the pregnant women's in utero children received a biologically significant radiation dose that was relatively high due to the ...
Mosquito-borne Zika virus is suspected to be the cause of 2,400 possible cases of microcephaly and 29 infant deaths in Brazil in 2015 (of the 2400 or so notified cases in 2015, 2165 were under investigation in December 2015, 134 were confirmed and 102 were ruled out for microcephaly).
An analysis by Timpson et al., found "no meaningful associations with brain size and various cognitive measures". [23] A later 2010 study by Rimol et al. [12] demonstrated a link between brain size and structure and two microcephaly genes, MCPH1 (only in females) and CDK5RAP2 (only in males).
Loss of function in AKT can cause microcephaly in humans while inactivation of the pathway can cause hemimegalencephaly. [4] There are also several cancers that have been shown to be linked with mutations in the AKT pathway, including melanoma and lung cancer. [4] [16] [17]
Zika is transmitted from pregnant women to the fetus ("vertical transmission"), and causes microcephaly and other severe brain anomalies in infants born of women infected with the virus. [8] [10] [102] A baby with microcephaly (left) compared to a baby with a typical head size. Zika infections in adults can cause Guillain–Barré syndrome. [10]
Chiggers are tiny, only about 1/100 of a millimeter in size and only bite people when they’re in the larva stage. (Here’s how you can tell the difference between a chigger bite and a mosquito ...
The cause of hydranencephaly is not clear. Hydranencephaly is a result of an injury of the nervous system or an abnormal development of the nervous system. The neural tube closes in the sixth week of the pregnancy, [15] so hydranencephaly develops during these weeks of the pregnancy. The cause of these injuries/development is not clear. [16]
Fire ants also sting humans, Frye says, which can cause small pus-filled bumps on the skin, according to the Cleveland Clinic. Other symptoms: Ant bites are typically painful and itchy.