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No cases of vertical transmission or placental infection were seen in a prospective cohort study involving over 60 pregnant women with COVID-19.
Placental transfer of antibodies against SARS-CoV-2, however, was less efficient than expected (lower than vaccine-induced influenza antibodies), suggesting that infants remained susceptible to illness, reported Andrea Edlow, MD, MSc, of Massachusetts General Hospital in Boston, and colleagues. These data fill a substantial knowledge gap, point to the rarity of vertical transmission, and establish compromised SARS-CoV-2-specific immunity in the neonate, Edlow and colleagues wrote in
The researchers added that with only a few cases of vertical transmission reported in U.S.-based studies, the mechanisms of fetal and placental protection from SARS-CoV-2 and how those impact neonatal immunity are a critical area of investigation. Edlow s group suggested that the rarity of vertical transmission may be related
EEG Brainwave Study Connects Experiences and Expectations
Source: Kateryna KDN/Science Photo Library/Getty Images
December 15, 2020
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A set of high-frequency brain waves may help us unconsciously set expectations of the world around us and gauge when things are different by comparing memories of past and present experiences. In a study done on epileptic patients with EEG electrodes implanted into their brains, NIH scientists showed how feedforward signals can establish a link between a single visual experience and electrical waves in the frontal and temporal lobes of the brain.
“Our results suggest that every experience we store into memory can be used to set our expectations and predictions for the future,” said Kareem Zaghloul, MD, PhD, principal investigator at the NIH’s National Institute of Neurological Disorders and Stroke (NINDS), and senior author of the study, “Feedforward prediction error signals during episodic memory retrieval,” published in
US Covid-19 hospitalizations at record high for 12th day as FDA says it plans to grant emergency authorization of 2nd vaccine kitv.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from kitv.com Daily Mail and Mail on Sunday newspapers.