World News
Estimates of rates of long COVID in Africa vary greatly
Comparing symptoms at 1-month and 3-month follow-up, one study observed a declining trend of long COVID, from 82.1% to 66.7%.
Read more.Prepandemic ICU performance related to lower COVID mortality rates
Efficiently managed ICUs also saw lower mortality from the novel coronavirus.
Read more.SARS-CoV-2 persistence, low serotonin may cause long-COVID symptoms
Falling serotonin levels disrupt vagus nerve signaling, which may cause neurocognitive long-COVID symptoms such as memory loss.
Read more.COVID mRNA vaccines offer strong protection for young kids, data reveal
The authors said the findings support vaccinating this age-group, despite low incidence of severe disease or hospitalization.
Read more.COVID infection can damage the brains of dogs, study suggests
The findings could indicate that SARS-CoV-2 can produce pathologic changes to the blood-brain barrier’s structural and functional integrity.
Read more.