The D614G variant has become the most common worldwide, according to a research report published by WHO in June. So far, the WHO has said there’s no evidence that the mutation has become more infectious or that it leads to severe disease.
Even still, the WHO report mentions that a mutation could hinder the efficacy of vaccine. Another paper, published in the journal Cell in July, also said the mutation should be considered during current vaccine clinical trials. Essentially, researchers need to fill in the “critical gaps,” wrote the epidemiologists from the Yale School of Public Health, Harvard School of Public Health and Columbia School of Public Health.Medscape Coronavirus Mutation Has Spread Worldwide, Scientists Say