HealthThe surprising, ancient origins of TB, humanity's most deadly disease New developments in a 10,000-year-old cold case have upended our ideas about how and when tuberculosis began infecting humans – and offered hope for a better vaccine Features
HealthCuba's bid to vaccinate all citizens with home-grown covid-19 shots Cuba is the smallest country to get a covid-19 candidate vaccine into large-scale trials and has begun testing it in 1.7 million people prior to approval News