Instead of fabric on face, small air-pressure device is worn on baseball cap, creating a ‘shield’ blocking 62% of incoming, 99% of outgoing virus droplets, says peer-reviewed study

The pandemic has killed more people than most, but not all, other viral epidemics in the 20th and 21st centuries

Professor Ian Goldin argues pandemics have always threatened humanity more than wars, but governments overfund armies and don't give enough to health systems

Population growth, loss of natural habitats likely to bring wild animals into more contact with humans, easing way for infectious diseases to jump between species

AIDS is by far the most deadly epidemic of modern times, with 32 million victims; post-World War I Spanish Flu killed up to 50 million

What is the mortality rate? How infectious is it? And how is it transmitted from person to person? There is still much to be learned, but here are some preliminary answers

57 people die in most fatal day since outbreak of new coronavirus, bringing China's toll to 361; 1000-bed hospital set to open Monday after just 10 days of construction

Officials advise those visiting Wuhan to stay away from animal markets and those who have respiratory disease; doctor confirms human-to-human transmission