Medicine

It’s one of the most challenging organs to re-create

A pediatric infectious disease expert answers questions about whether the vaccine is safe and why children need it

Preliminary results from a trial of more than 600 people are the first to show the benefits of combining different vaccines

People older than 80 who waited 11 to 12 weeks for their second jab had higher peak antibody levels than did those who waited only three weeks

Pfizer-BioNTech vaccine approval is younger teens’ shot at freedom

Hopes are high for a class of drug that could treat neurodegenerative conditions—but a recent clinical trial has brought the field up short

The illegal substance—paired with intensive therapy and hard work—dramatically improves PTSD symptoms

Hopes were high for drugs designed to lower levels of a mutant protein, but development has stalled

The development from the Biden administration draws cheers from public health researchers and ire from drugmakers

The new DNA-based test predicts transplant rejection

Clear messaging and transparency are vital, say some experts on risk assessment and decision-making

Next-generation COVID-19 vaccines will not only tackle different versions of the virus but will provide solutions across the world at a fraction of the cost