Emergencies chief says coronavirus is a worldwide 'wake up call' to prepare for something that could be even more severe

Research on 90 patients, healthcare workers at London hospital finds that 60% had 'potent' antibody response when infected, but it was only maintained in 17% of them 3 months later

China records fall amid strict containment regulations; Germany and South Korea see increases; outbreak in Normandy leads to worries in France; UK lowers threat level

World Health Organizations says governments should encourage people to cover their mouths and noses if there is widespread transmission or social distancing is difficult

Brigadier general says analysis and 'certain news reports' point to the source of the virus being a hostile state 'with economic goals'