Oxford Covid vaccine could leave people unprotected despite being vaccinated, expert warns

With coronavirus cases around the world now at over 68 million, scientists have been working around the clock to develop a vaccine. A vaccine developed at the University of Oxford was initially tipped as the front runner in the fight against Covid-19. Yesterday, the results of the Oxford vaccine’s Phase III trial were announced, showing an overall vaccine efficacy of 70.4%. However, the efficacy was found it increase to 90% when participants were given a low first dose, followed by a larger second dose of the vaccine. While this suggests that giving a low first dose could be the best way to roll out the vaccine, one expert has warned that this tactic runs the risk of leaving people unprotected between doses.