HealthHow deliberately giving people illnesses is supercharging medicine The covid-19 pandemic opened the door to once-controversial human challenge trials. Now, volunteers are willingly catching norovirus and influenza to reveal how our immune systems really fight back Features
HealthRSV vaccine that may protect against bronchiolitis has promise in mice An experimental vaccine warded off the respiratory syncytial virus, the most common cause of the chest infection bronchiolitis, in newborn mice News