Source: United States & Canada – South China Morning PostVaccine maker Novavax on Monday said its shot was highly effective against Covid-19 and also protected against variants in a large, late-stage study in the US and Mexico.The vaccine was about 90 per cent effective overall and preliminary data showed it was safe, the company said.While demand for Covid-19 shots in the US has dropped off dramatically, the need for more vaccines around the world remains critical.AstraZeneca shot has good risk-benefit profile for over 60s: European Medicines…Read More