None of the blood types — A, B, AB or O — was linked with their risk of becoming infected, need for hospitalisation or intensive care, according to a report published in JAMA Network Open. Smaller studies from China, Italy and Spain have linked type A blood to higher COVID-19 risks and type O blood to lower risks, and a large study from Denmark tied blood type to Covid-19 severity. An inhaled steroid commonly used to treat asthma can help keep patients with mild Covid-19 from getting sicker, according to results from a trial published in The Lancet Respiratory Medicine....