A leading scientist and member of SAGE says the lockdown easing in June ‘could be delayed', as Indian variant cases are increasing in UK hotspots. Vaccine developers are asserting we will need annual boosters or new vaccines to tackle variants, but some scientists are questioning whether this will be needed. When Pfizer said people could need annual boosters, the ex-director of Centres for Disease Control and Prevention said there is no evidence to suggest that this is the case. Scientists said anticipation around the need for boosters is being set by pharmaceutical executives not health specialists, though ‘preparing for such a need as a precaution was prudent’. The director of WHO’s department of Immunisation said, ‘We don't see the data yet that would inform a decision about whether or not booster doses are needed.’