You might assume that all great medical discoveries are the result of deliberate action on the part of scientists. Oxford vaccine doseIf the Oxford-AstraZeneca vaccine had been given at the specified dose, the effectiveness of the vaccine at stopping Covid-19 would have been a slightly disappointing 62%. In Brazil and South Africa, the Oxford vaccine was given at the correct initial dose, and the second dose a month later. Before his work, bacteria were notoriously difficult to isolate from each other and were often grown in a nutrient broth that supports many species. Before this, stress and certain foods were thought to cause stomach ulcers.

Source: News 24 November 25, 2020 11:08 UTC