covid-19 variants

Covid-19 vaccine makers prepare for next possible phase

Vaccine boosters may be necessary

Originally Published: 23 JUN 21 07:42 ET Updated: 23 JUN 21 09:16 ET By Jacqueline Howard, CNN (CNN) -- Vaccine makers are preparing for a next possible phase of the Covid-19 vaccine rollout: booster doses. Currently three coronavirus vaccines are…

'Vaccines are our only way out of this'

The US must vaccinate most of the country against Covid-19 by winter to avoid more variants, expert says

Originally Published: 18 JUN 21 02:46 ET Updated: 18 JUN 21 03:20 ET By Madeline Holcombe, CNN (CNN) -- With the odds stacked against the US reaching the target of 70% of adults at least partially vaccinated by July 4…