If you’ve previously been infected by the new coronavirus, just one dose of the two-dose Pfizer or Moderna COVID-19 vaccines may be enough to protect you from future infection, according to a new study. “We showed that the antibody response to the first vaccine dose in people with preexisting immunity is equal to or even…  read on >  read on >

The trauma and loss of stroke can often leave survivors with long-term depression, and women appear to be at special risk, new research shows. “We did not expect that the cumulative risk of depression would remain so persistently elevated,” said study author Dr. Laura Stein, an assistant professor of neurology at the Icahn School of…  read on >  read on >

Diphtheria could once again become a major global health problem due to vaccine and antibiotic resistance, researchers warn. Diphtheria is a highly contagious — and potentially deadly — infection that can affect the nose and throat, as well as the skin. It is caused primarily by strains of bacteria called Corynebacterium diphtheriae, which make a…  read on >  read on >

It’s that time of year when flowers and trees bloom freely and pollen makes the lives of many miserable. But new research reveals a hidden risk: It could also make you more vulnerable to COVID-19 infection. COVID-19 infection rates waxed and waned with pollen counts in 2020, according to tracking data gathered across 31 countries…  read on >  read on >