When  Covid-19 gets into our airways, it enters our cells and ejects its genetic material, co-opting the infected cell into making copies of the virus, which then go on to infect other cells. Photograph: iStock

In mid-March, just after restrictions were put in place to slow the spread COVID-19, Dr Nigel Stevenson looked out the window of his Dublin apartment.(...)

World Health Organisation  health emergencies programme head Michael Ryan and director-general Tedros Adhanom Ghebreyesus: not recommending further limiting of trade and movement of people. Photograph: Fabrice Coffrini

The World Health Organisation has declared the coronavirus outbreak that started in China a public health emergency “of international concern”. The d(...)