HealthAustralia is battling its largest diphtheria outbreak in living memory Vaccine misinformation, nurse and doctor shortages and crowded living arrangements may be behind soaring rates of diphtheria in remote Indigenous communities in Australia ¿ìè¶ÌÊÓÆµ
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