European stocks rise for fourth day on healthcare bounce

(Reuters) - European shares rose for a fourth straight session on Thursday, as optimism over businesses returning to work and stimulus for the battered euro zone economy outweighed rising U.S.-China tensions.The pan-European STOXX 600 index rose 1.6% to hit an 11-week high, with healthcare stocks rebounding from losses earlier this week.GlaxoSmithKline , the world's largest vaccine maker, gained 2.1% as it laid out plans to produce 1 billion doses of vaccine efficacy boosters for COVID-19..